I have no idea what you are talking about. Wizards are broken the instant they realize that Magic Missile sucks and Sleep/Color Spray/Charm Person are good spells (and those are arguably weaker than Grease, which can stall even high-level encounters for a full minute if you know what to do with it). It gets worse when they get 2nd level spells, like Glitterdust.
Rogues are fine if they avoid UMD, and even then you can avoid them breaking the campaign by not letting them bypass the WBL. Or MDJ, but DMs who use MDJ unmodified deserve to be shot.