The Advanced Games were messed up with priority for their naming and release order anyway.
Advance 1 is the Doki Doki game… Mario 2. (which, while a good game, isn't REALLY a Mario game... and is so different from the rest a lot of people dislike it.)
Advance 2 is Mario World... Mario 4.
Advance 3 is Yoshi Island.
Advance 4 is Mario 3.
WTH? (Not to mention its a shame there's no all stars pack for the handhelds... or the insane Lost Levels.)
Its almost like all the gameboy Mega Man games mixing and matching the bosses from whatever 2 NES games they fell between.