If you want to play rogue, play rogue. If not, play something else. No-one is forcing you to play rogue, even if it may be the best class. Just because a class is better it doesn't mean to play it. Easy logic.
However, I understand the reason behind the complaint. Perhaps you play MP and it sucks to see a teammate do more damage, but why even care. Classes have different utilities.
I'm so tired of seing post like this. The argument "you don't have to play it" is retarded. It's a early access game, and people use the forum to tell Larian when they think something is unbalanced. It's not about if you play it or not, it's about telling the dev they need to balance stuff.
Back on the topic, rogue isn't that op, it's more likely the combo with elf + time warp (custom character) + rogue that is op.