Pokémon X and Y Playthrough Discussion

currently doing a no-expshare run. I feel that i'll end up too overleveled with it... am i right?

Yup, EXP Share is 100% guarantee you'll overlevel the entire game since instead of only 1 getting experience it's your whole team, constantly, so in some cases you can end up with Pokemon that are overleveled without even USING them (Event Blaziken + EXP Share)

I didn't use it, and never made a point to grind either and I was weaker than all the Elite Four and the Champion when I got there. The Champion would have EASILY swept me if not for me using Toxic on their strongest Pokemon that slowly ate away at it while I revive-stalled. Best experience.