Ok then, now for Shippuden Sasuke and Part 1 Sasuke. (This is for those that actually thought this, I've already Covered the Sasuke participating in this battle already, on post #132) If you forget this, I WILL END YOU FOR BEING SO BLIND AND UNNATTENTIVE.
Part 1 Sasuke is somewhere between Supersonic - Lightning Timer
Though closer to the supersonic section of things, his Chidori is measly compared to something like Kakashi's Chidori or Raikiri for that matter.
We know that Jirobo's curse mark in the first stage gave a reasonable power boost. Let's assume it's x2 since he's part of the sound four and therefore it's reasonably special. By Stage two curse mark, he'd gotten an x 10 boost. Sasuke's curse mark (The Heaven Curse Mark) is on par with the Earth Curse Mark, both are considered the most powerful of all the curse marks. Therefore, we can safely assume that all power multipliers are easily above all previously mentioned for Jirobo's curse mark.
At a bare minimum, if we'd assume that its x10 like Jirobo's (Which it isn't, don't worry, I'm not stupid) Sasuke's speed should at least be 10x Supersonic.
Now, obviously, I don't have to point out that Kratos is stronger and faster than this Sasuke, so piss off SasuTards (I luv you)
Part 1 Sasuke has limited Jutsu's, nothing to Kratos in this case, as his chakra is nothing to what it's like in Shippuden. And Sasuke has a bunch of wires, Shuriken and Kunai. He hasn't been shown using Chidori with any of these weapons, so nothing to really note here. It's GG.
Naturally, by this point, it's GG, but you guys are resilient just like the GOW lovers, so let's keep on with this analysis.
Many of you would point out that in my previous statement about why the Versus Sasuke that we're all supposed to be debating - getting off topic - but I mentioned that his Susanoo could fly, and that Kratos could not; therefore gg. BUT!! The curse mark takes a toll on its user, which means that they can't use it for too long. Meaning that he'd have to eventually have to come back to the ground. And you may also be saying, "But he'd also just hide away from Kratos until he'd replenish his chakra and try again" Yeah, there's such a thing as running to where you're targeting, and by my logic, Kratos should be faster than Sasuke.
He's still very intelligent here, though I really doubt he'd figure out something against Kratos with this kind of limited arsenal. And if we're discussing Genjutsu, Sasuke doesn't really show any Genjutsu this early on in the series, he isn't strong with it either. SO PART 1 SASUKE LOSES, Sasuke lovers, stop overrating Sasuke too much, GOW is a respectable game with some respectable debaters.
On to time skip Shippuden Sasuke with Orochimaru Absorbed
So this Sasuke is pretty much the same with Part 1 Sasuke, except buffed strength and some Orochimaru style Jutsu's with his own widened arsenal and trained intelligence. And he has Manda as a summon.
By this point, his stronger Jutsu's like Chidori should effect Kratos, and his fire Jutsu's for the most part, may graze him, but not really do anything. Jutsu's like Kirin should definitely work against Kratos, if not K.O him then and there, that is depending on if he's able to set it up with Kratos attacking him.
Kratos is definitely a lightning timer, so let's discuss this Sasuke's speed. His base form could've killed Team 7 then and there if he wanted to at first sight. It's safe to say that he's stronger and faster than Kakashi when compared to when he was during Part 1 (That being Part 1Sasuke < Kakashi)
With his Sharingan reaction time, his attacks should be well into the High Supersonic ranges. His improved use of the curse mark and his growth of chakra from ageing means that he now has not only a stronger cursed form, but that he can maintain it longer (Especially with Orochimaru Chakra) Whether this form takes him into lightning timer is debatable, but at the very least, he should be close to it, as, at this point of the story, there's not too much different from when he was in the Five Kage Summit. I admit, perhaps it's his ever-growing hatred mixed with his MS that heightened the potency of his chakra, which allowed him to dodge the Raikage (But like I said, not too much difference)
Sasuke really isn't too much for the hand to hand, and he is intelligent enough to try to understand the enemy before he does something to stuff up. So it's most likely that he'd test his ground instead of rushing headfirst into battle with Kratos. With his Sharingan, he should be able to keep up in hand to hand, definitely in his Cursed State.
In the Part 1 Sasuke bit, I discussed whether or not his ability to fly would allow him to beat Kratos like in his EMS/RINNEGAN section I discussed a couple posts ago. At this point, he can use the cursed state longer, so perhaps he could K.O Kratos, but even I wouldn't rule out the possibilities. He could still run out of Chakra before finishing him off, maybe this is when he begins to set up Kirin.
He can summon Manda, and that's a good vantage point I suppose or something to stay away from Kratos. (But we all know what Kratos would do to a giant snake now wouldn't we *quick time event much*)
His Genjutsu at this point is potent enough to help in battle, so this adds another advantage in my books.
Kirin should easily kill Kratos depending on if he somehow evades it or not, though I'm half doubting, half not doubting the possibilities of a death by Kirin. His Chidori varients should add some element of hand to hand and some strategic play on Sasuke's part.
By this point, this is the deciding factor to who would win between these two.
For the most part, I'd say Sasuke, though Kratos does have a good chance of winning if the circumstances are right or the fight goes awry for Sasuke. (Or if my calculations are incorrect - which they shouldn't be, cos they're databook checked: I've been doing this for a while now)