Very rarely does anything good happen when you let the opponents play 2M with a fit. On a good day, the opponents will make 3, and you'll keep up with the pairs who pushed them up a level. More likely...
They'll make 2, but you'll lose matchpoints to pairs who
A) competed and made something at the 3-level (or 2S over 2H)

competed and set the opponents in 3M
C) competed and went down less than the opponents' partscore.
1. LSAT tutor for rent.
Call me Desdinova...Eternal Light
C. It's the nexus of the crisis and the origin of storms.
IV: ace 333: pot should be game, idk
e: "Maybe God remembered how cute you were as a carrot."