huzba, your image shows normal antialiasing. Normal aliasing and sub-pixel antialiasing are different in that the latter literally increases the horizontal display resolution by x3 in a primitive way because it treats each of the three sub-pixels separately, rather than as a whole. Normal aa is only theoretically "sub-pixel" but not literally. That's why I think it's best if the term "sub-pixel" is reserved only for what you call "funky RGB pixel trickery".
Also, "after images" = "antialiasing", by definition.