You totally ignore what's blatantly true about Hulk while trying to downplay him AND other characters and trying to make his fight with Zeus to be more than what it is.
Also, Thanos is not on the skyfather powerlevel, He's an crazy overrated supervillian who can't be bothered to rely on his own power.Like I said, a good villian but some people tend overate his power even though all he does is gain possession of some cosmic item for crazy goal towards death.
I'm just saying that some people (Hulk haters) will give credit to anyone but Hulk. Some haters may even admit that Hulk is powerful but then add a "but". I say that besides the absolute and supreme God of the marvel universe, Hulk's the strongest there is. No "buts" about it.
Rivaling and surpassing the power of the gods has never stopped the Hulk from being a successful character before so why would it stop him now. Marvel knows how to write the Hulk. Being incrediblely strong but unpredictable is what makes the Hulk a cool character.