Laz and Tommy stood facing each other while others charged forward. It's worth it to note that on Tommy's side, they had about five less people overall, due in equal parts to the members of Laz's group who died and the member's of Tommy's group who Laz and Ruby killed. Originally, the difference would have been a lot higher.
The problem was that there were only so many front line fighters on Laz's side or even those who had something that could be used to fight.
Once you took all those points together, the numbers were pretty equal.