Nintendo is enforcing a 2GB file size limitation on the 3DS eShop according to Team Meat’s Tommy Refenes. This restriction would be much more reasonable than WiiWare’s 40MB limit.
In issue #72 of Nintendo Gamer, Refenes also said “Super Meat Boy would have been on WiiWare if we could have had just a few more megabytes of space”.
He told the magazine:
“[WiiWare's] 40MB is horrible, but [3DS's] 2GB is reasonable. Super Meat Boy would have been on WiiWare if we could have had just a few more megabytes of space – you can only compress stuff so much before you have to start cutting out huge parts of your game. Unfortunately, at that point, it just isn’t worth the time.”
Refenes wrapped up his comments by noting Team Meat would be interested in bringing their next game to the Wii U:
“If we can in the future, we’d like our next game to be on Wii U as well as everything else.”
Thanks to joclo for the tip!