1. Naruto can finally fuse with Ma and Pa now
2. Naruto's power increase:
The way naruto is using BSM atm isn't really a powerup. Yes, in the future he has the potentional to advance his combination of the two modes. but as of now he is only using it to add senjustu while in BM.
Basically it is just BM Naruto that can hurt Tobi.
So all the BM Naruto > EMS Madara is just speculation as the new mode is largely featless.