I cannot speak for the single player portion of this game but the multiplayer portion is done by the same developer of Bad Company 2, DICE, so you know what to expect.
I haven't gotten too far into the beta yet but it's quite obvious Medal of Honor was made to counter Modern Warfare 2. You can see the multiplayer of Medal of Honor as Bad Company 2 with a Modern Warfare 2 influence.
I really can't stop comparing the multiplayer to Bad Company 2 or Modern Warfare 2 so here it goes anyway. The multiplayer seems to be more close-quarters than Bad Company 2, with a focus on closed urban combat, much like Modern Warfare 2. However the maps are much much larger than Modern Warfare 2 therefore making it also similar to Bad Company 2. The ranking system and such seems to be a combination of the two.
In my honest opinion I can no longer tell the difference between these shooters apart from maps, guns and single player. Bottom line? Fun if you're into that sort of thing. If you're looking for something new you wouldn't even be reading this right now.