Not a bad thing. Back in the day I loved RM.Haven't played it, but have played the game it's cloning: ICE's MERP, and have read VsD. It's a fairly close pseudo-clone. It uses the MERP style picks-per-category, and the same open-ended 1d100+SkillMod (and skill mod includes att mod). Crits are a little less outré. Just a little.
It uses a slightly different spell list acquisition - 1 rank is 1 spell level in one list. No rolling for "did I learn it yet?"
It's still very much rolemaster light.