How much of the $25 Million budget went to Li and Statham?

$25 Million seem pretty low, and Li got $13 Million for Warlords, and I just can't see him getting anything less then $5 Mill, and Statham must at least get a few millions, which means there can't be a lot of money left for the action scenes.

The Expendables cost $82 Million and Sly talks about it like it was low budget. I wonder what he would consider $25 Million, micro budget? Or STD action film which usually has budget for $5-6 Million.