It sounds good to you because you hadn't taken the time to actually understand what this means. So everyone is capped at lvl 50 so puzzle me this: how are you supposed to beat champions at lvl 50? How are you supposed to beat the villains with lvl 50 girls? What about pop, how do you complete them with lvl 50 stats?
Then there is your assertion that you can beat higher lvl players easily for a while. Lets just forget for a moment that said higher lvl players will naturally dwarfs you in pure stats: equipments, lvl, buffing and their mythics girls/5 stars legendaries having naturally slightly better stats even then, what makes you think that they won't bruteforce the process to get a bigger competitive edge faster? In order for your predictions to come true, then they will need to seat on their asses twiddling their thumbs and if there is one thing I've learned about high lvl players, it is that they're always the first to recover from any "improvements" that the devs keep throwing at us.