While I agree that maybe Weakness 3 might be over the top, I would put forward that countless people have defeated people with buff towers and weakness towers.Typically those who are successful in attacking generators with those towers use strategy and more than one round of assault to take out the objective. Before making a post about a lack of counter-play, I would suggest at least attempting to employ some form of counter-play to see if that might work.
It's been said constantly that Conquest is designed for endgame, town versus town (often understood to be at least 3 people) gameplay. You should utilizing strategy and teamwork rather than brute force to win tgen fights.