I've harped on Sunshine quite a bit in the past, especially on the Galaxy 2 board back then, but it's not terrible, just mediocre in my opinion. It has many problems with it, but it's still enjoyable.
Also that image doesn't even make sense. The NSMB games are hated because they are all exactly the same, with no changes at all. Not to mention there are about to be 4 games in the series for some reason. Sunshine was the 2nd 3-D Mario game ever made, and as I said it has its own list of problems. People were disappointed with Sticker Star because we were hoping for a more traditional turn to form after the radical change that was implemented in Super Paper Mario.
People don't like seeing their favorite elements of a series stripped away from them. There was still so much that could have been done with the first 2 PM's battle system, and instead they threw that all away for an item-based combat system with no depth.
This sig will not change until J.P. Howell and Carlos Pena are released or sent down from the Tampa Bay Rays. http://i34.tinypic.com/adnlsk.jpg