Heres the problem:

70/5/0.5 - Limp/Calls a lot preflop, folds a lot postflop
70/5/0.5 - Limp/Calls a lot preflop, wont fold any piece of the board or draw (even gutshot) postflop, has been seen to call down with Q high.

Exploiting those two people with identical stats requires different approaches.