[erazeN]

First of all, before this chapter, it seemed that the WB had a disadvantage in numbers and power.
-WB forces were him and his division commanders(btw I'm not sure, but since Ace is captive, and the other one was killed by Blackbeard, there are only 2 commanders left).
-On the WG side.Shichibukai, Vice-admirals, Admirals. All the high ranking marines are there. On top of it, there are random pirates who want to kill WB too, like Crocodile, Blackbeard and his crew etc.

Now that WB has brought his allies, things seem to be in balance. And Luffy looks like an ant, but I am sure that he will end up playing a big role in all of this(something like Whitebeard dies in combat, but Luffy manages to save Ace).