A corratec bike with Wheel Size Split performes a lot better in flowy trails which have a lot of turns. It is far easier to lay the bike over into the turns, there is more room to move around on the bike and the acceleration out of slow speed turns and situations is great. The smaller rear wheel is marginally more agile and precise on technical trails. On bigger jumps the 27.5" rear wheel gives a little more clearance and there is less risk of the mid air butt buzzing which is heavily unsettling. By the way a unique point of the wheel size split: The 27.5 bike also manuals a lot easier, picking the wheel up and holding it into a manual is easier than with a 29″ rear wheel.