Final Fantasy IV PSP Complete Edition Vs. Final Fantasy IV DS

I just recently started up a copy of FFIV PSP and there's only one thing that comes to mind when i play this game. Downgrade? I don't know, it's a little weird, but am i the only person who thinks that making a sprite based game for the PSP instead of sticking to the 3D version that the DS got, a downgrade? To their defense, they did remake FFIV: The After Years as well. It's a little difficult to complain about something regarding these games, when they're literally handing you 3 games for the price of one. You get Final Fantasy IV, some extra content that you'd normally unlock after completing the first game, and The After Years. The amazing thing about this is that you don't have to pay for Episodes for The After Years, like you normally would on Wiiware. You could probably pick up this game for about the same price as purchasing The After Years alone on Wiiware, except you're treated to new and beautifully improved sprites on the PSP version. The sole reason that i can think of why Square would want to develop these games as 2D sprites games is because it was the only way to fit all of these games into an UMD. My only problem with that theory is that i'm almost positive that FFIV on the DS is about 256mb or less.. Meaning that remakes of the other 2 games in 3D would probably still allow for all 3 games to fit into one. UMD's should be able to store at least 1gb of storage, or possibly even more. Regardless, i don't know and probably never will know why Square didn't fully remake these games in 3D. This decision of theirs doesn't really bother me at all, it was mostly for arguments sake.

Final Fantasy IV PSP uses 2D sprite graphics

Final Fantasy IV DS used full 3D graphics