This is a pretty debated topic and there's probably tons of other threads on here about this. So in smash 4 lots of people want characters nerfed buffed or banned. But there are also a great amount of players that beleive players will eventually overcome characters strengths. The best example of this was when the melee competive scene was just getting started and many of Links moves into an up B was a true combo. And he was considered OP. But now the metagame has increased to the point where he is B tier. Maybe as the smash 4 meta increases high tier characters will get bumped down the tier list as well. Only time will tell.