Edge over too loose players and "max looseness"

[El helado Patata]

I just moved up to 10/20 and 15/30 because I saw some games with very high vp$ip and i assumed that I could win over these games just by playing somewhat tighter then my opponents.

Anyways, this got me to think about how much my edge will be to play in too loose games if we assume that all players has the same postflop skills.