Mud Lite XL vs Swamp Lite

I have a set of 25 inch mud lite xl's and was thinking of selling them and getting some 27 inch swamp lite's. Are they at least as good in the mud as the mud lites and how do they ride on hard ground. i can't find anywhere that tells what the tread depth is on the swamp lite's. Going to go look at some tomorrow afternoon to see what they look like