Netplay will help to a certain extent even though MBAC is different from MBAA. But it still helps in fighting against other human players.
Just that when switching back to MBAA, there are quite a few things to look out for.
I find that MBAC helps me in training my offensive approaches as there is no guard gauge so people could just block indefinitely if you are not throwing them.
Well just my 2 cents worth of opinion, having some improvements is better than have none.