Jayce just isn't broken or OP according to the stats
Yeah sure he's a top tier laner, and he does have high damage, but the stats simply disagree with what people are saying. He has a pick ban percent of less than 10%, and his winrate is fairly low. Don't get me wrong, I do think he's a strong top laner, but he's simply not being abused nearly enough to be considered overpowered or straight broken, imo.
or a late game
/
in a teamfight? Well if it goes to late game jayce just isn't going to be as useful