While playing today Air stomp seemed to do a random amount of damage and splash radius. I used it right on top of a guy and it didn't kill him, yet dudes were killing me from a few feet away before they even hit the ground. I don't mind air stomp, it's a good idea for crash pods and spears etc. but it seems a bit buggy right now. A guy jumped beside me before and I was on a mid level platform while he air stomped the lower ground, I was still killed on the upper platform.