@Pikashu2 Because they are old rips done when the current site was starting (I'm guessing that they're at least 14-15 years old maybe more by long retired rippers, done before some people who go on here were even born). The rippers weren't sure whether those are all the sprites or one rip has something that the other doesn't hence the two sheets, many games from the early days of tSR can have two or more rips of the same thing.

In all honesty, the game should really be sorted out because it is a bit of a mess. Duplicated sheets, some having edits and recolors on the sheet. It could do with someone knowledgeable about the game for re-rips like what happened to Super Metroid and Yoshi's Island recently, yet this is more obscure despite the popular manga/anime. Might do in the future though...

why tf are there TWO spritesheets of al?