I think every Stat which is over 90 should give a bonus in the rating.
Power is the most important stat in my opinion but it depends because some Power are against some Villains or Heroes without any effect.
But Supervillains or Heroes also don't need to be great in Combat for example Galactus, Thanos...
Combat is important for normal Heroes but not for Superheroes.
3.Intelligence to outsmart his opponent, Speed
4. Combat, Durability
It's difficult to make a system because The Flash is very fast and can defeat strong Villains.
Maybe it should give another stat.
The rating makes Batman and Joker stronger than The Flash, Carnage, Venom and Bane.