I know it's already been asked somewhere but can somebody please give me the quick answer? Is it even known for sure?
it is in order of what your GPU supports in it's control panel. So for me, my AMD card starts with 2xMSAA, then has 2xMSAA EQ (which i think uses a few more sample points), then i get 4xMSAA, and so on it goes. So level 1 is the first, level 2 is the second, and so on that goes, too. I think when i tested some of this for rf1 i discovered that those EQ versions do not work, not sure about rf2.
It supposed to and that's true in rFactor 1. In rF 2 there are more options than you find in gfx drivers settings - that's the reason for the whole confusion. What corresponds to what?
I didn't notice that. Has everyone got 8 levels? If so it's probably a default amount of levels, perhaps.
It's whatever your graphics card can do - it should match your driver management thingy, if it doesnt, your driver may be hiding options or something.