In-game management at the very least, has been more responsive and reactive. You won't see GLC and Lamela coming on at the 55th minute together if Poch was still here. That tactical change swayed the balance to our favour massively.
I don't disagree as I think Pochettino is very poor at managing games, but it makes it easier for Mourinho to make changes for the better when you are always starting games poorly.