(Psi)SeveredHead
Adventurer
Combat system? Wait. M&M is basically d20. All the maneuvers and stuff are similar to D&D. I could understand there being an "unlearning curve"but not unfamiliarity.
My own experience was that M&M combat was easy and quite similar to d20 except damage and healing. I played about 5 sessions before the game broke down (due mainly to plot issues, eg lack thereof) and never wrapped my brain around that.
The DM actually had two campaigns going simultaneously (with crossovers). My second character wore an alien techno-organic suit that absorbed energy (giving him health) and had a vampiric claw attack. Despite this, he was so rarely injured (and when he was, it usually stunned him) that he had little opportunity to benefit from the healing.
And yes, we had PCs who could move ridiculously fast, but it rarely caused any problem.