I'm pretty sure he's banned from this mode because his ult has 0 cooldown and no counter. Realistically he's only S or S- though, since if you can cc him and kill him, he has to build up charge again and is useless without the ult.
can carry any game, can destroy most gods easily with very few counters, will only lose because skill diff or the other team has several S tier gods and your team doesn't.
can usually carry a team
can usually do pretty well, but struggle against top tier gods
some carry potential, but will need to outplay better gods quite a bit
are still good and can occasionally carry, but generally lose to better gods
very hard to carry a game, very little outplay potential against better gods
almost impossible to carry a game, very difficult to do anything, often best to just build tank
even the worst gods have a little bit of value and can still contribute a little bit