Well lets think about what Killerbee & Naruto have over Minato & A. Naruto is able to dodge A's movements and therefore counterattack, while also we know bee can overpower A from what we saw in the recent chapters. However Minato is pretty much unstoppable due to FTG which is practically the top level of space-time ninjutsu. The only way I would think Naruto and Bee would have any sort of a chance to stop him would be to double on him and seperate him/take out A first.
But alternativly, I think whatever side Minato is on will be the victor, so yeah.