Deadpool is a mercenary/assassin who developed cancer at some point in his life leading him to join the Weapon X program. They experimented on him hoping to cure him but it just caused horrendous scabs to grow on his skin, as a result, they sent him the Hospice. The Hospice is a place where washed up lab experiments go to get tortured/experimented on and during his time here Deadpool eventually fell in love with Mistress Death as he brought to the brink of death so many times. He eventually ends up killing his friend to prevent him from suffering (he was lobotomized) and due to this was scheduled to be executed. His executioner, Ajax, tore Deadpool's heart out and killing him. This caused his healing factor to kick in and Deadpool came back to life to break out of Hospice and lead his life as a mercenary.
While most would consider Deadpool's strength level to be peak human the wiki has him at a 2 tonner level. He also has feats that back up the wiki so I would call him lightly superhuman.
Some examples of strength feats for Deadpool:
While pretending to be Spider-Man he pulls two pilots out of a helicopter and redirects the helicopter's direction with only his physical strength.
Deadpool was able to snap a man's neck using only two fingers.
Deadpool has a pretty solid level of striking ability as he regularly has to go hand to hand with various superhuman heroes and villains.
Some striking feats:
Was able to knockout Madcap with one punch, Madcap has no sense of pain and heals as fast or faster than Deadpool.
Can cut through robots easily using his katanas.
Although not well recognized Deadpool does have a fairly high level of durability.
He can take blows from the Hulk without being turned into paste.
He can stay conscious after taking a stated building level rocket.
Mainly what Deadpool is known for, his healing factor makes him nigh-unkillable. I won't go into great detail here but here are some feats for him.
Deadpool has regenerated from a pile of ash after Thor attacked him.
Deadpool can stay conscious even after having his face smashed in by Luke Cage.
I don't think people give Deadpool enough credit when it comes to hand-to-hand combat. He's actually ridiculously good at and has a lot of great showings against some of the absolute best fighters in the 616 Universe.
Dodged and caught a sucker punch from Wolverine
Acrobatically dodges a hit from the Hulk and gets his swords into his nostrils mid combat.
Manages to catch Taskmaster off-guard with a sucker punch (Taskmaster has photoreflexive memory allowing him to read other people and instantly know their fighting style)
Is able to hold his own against Captain America (one of the best street-level hand-to-hand fighters in the Marvel Universe)
Deadpool has a pretty ridiculous reaction time. The feat above of him casually dodging a punch from Wolverine proves this as well some of his more high end feats. He's a pretty casual bullet timer and could potentially be higher than that.
Has dodged bullets while fighting in a bar.
Deflects a bullet while fighting Fantomex.
Has dodged Cyclops beams which are confirmed on panel as lightspeed.
Deadpool is extremely lethal with guns, regardless of what kind. This combined with an open area is going to give him a serious advantage in this fight.
Deadpool can shoot accurately without even looking
Can tag the Falcon mid-flight with tranq darts
Simultaneously takes down a bunch of AIM goons despite being surrounded (doubles as combat speed he is clearly FTE in this scan)
Deadpool is strong enough to present a threat to any street tier he may come across
He is skilled enough to put up a fight against some of the highest tier H2H combatants in Marvel
Durable enough to pretty much never get one shotted
Can heal from any injury should he take damage in the fight
Has the advantage in the open arena, this really plays to his skills with guns and marksmanship
Hibari has blocked a sniper round but can he handle the pouring on of bullets constantly?
Deadpool can heal from almost anything so he could blow himself up to take down his opponent.
Deadpool is fast enough to go hand to hand with Hibari and shouldn't have any speed disadvantage.
Has Hibari fought anyone with an extremely unconventional fighting still that is still extremely skilled?
Deadpool can fight for up to a week without tiring can Hibari do the same?
@cucco12: Does he have feats against demonic beings? Are you joking with this argument? That's like asking if captain America has feats against X race... That is a ridiculous arguement. And you still haven't addressed how she gets around him freezing time.