If you look in depth at their numbers, you'll find out they're a lot closer than many claim. I'm not talking about the obvious, like ppg, rpg, bpg, etc., although they're close in those categories, too.
Like I said, I wouldn't argue with anyone saying Gasol was better and said I'd give Bryant the slight edge over Wade despite evidence to the contrary, so cut the cliche "you're a homer" nonsense. This isn't a case where it's inarguable. We're not talking about James here.
Gasol hasn't "added some toughness", you're obviously a novice fan who has to have the three Lakers fans who call the vast majority of the Lakers nationally televised games tell you what to believe.