MMR is your match making rating.
It's the points that actually place you against your opponent, ie: your
true skill level.
Blizzard just doesn't let us see it directly, but we can approximate and guess fairly well based upon who your opponents are and w/l.
The points in your league are general points that are
close to your skill level, but not really exactly what it is since blizzard (for some reason) doesn't want to let us know what our REAL skill is.
so if i am a 1st ranked bronze and i am being placed against gold/plat ranked guys i should be hoping to move up shortly?