No, the league is among the easiest in the series with the shittiest champion, while Super Training is completely optional and would only make an already easy game even easier (keeping Exp.Share on would turn the game into straight baby-tier difficulty)
But be aware, even if this game is easy overall, there are lots of things that can cause you deaths (or even white out), and most of them come from random fucking trainers with random coverage moves or other shit you don't expect, Black Belts being some of the biggest offenders, in fact I would say this game has hard normal trainers and easy bosses (all of this is assuming you play with Exp. Share off)
