You all know what Super Mario Galaxy games are like so I'll skip the intro.  
 
The controls take half a second to respond, Mario's behaviors are erratic and inconsistent thus making relatively straightforward actions a leap of faith, and the games are riddled with random death scenarios that are completely out of your control. On top of that there are some of the worst camera angles in games outside of Tomb Raider. For a platformer you'd think these aspects would be more refined.  
 
Possibly you may be thinking at this point "oh Geno, maybe you're just bad at the games and now you're just mad". A plausible thought, but not really applicable in my case. I have no problem playing hard games or games at hard difficulty as long as the controls are sufficient. For example I'm currently over halfway through my insanity Mass Effect 2 playthrough and I haven't cursed any of my deaths once, since it's clear what I did wrong each time. 
 
SMGs are great games and I did overall enjoy them, but let's be honest, the controls are garbage. I feel that any reviewer that gave these games better than a ~85-90 score is probably a fanboy. Who here wants to bet that if Mario's foppish mannerisms were taken out of the game and it wasn't made by Nintendo its controls would be much more heavily scrutinized? I do. 

If you try playing Mario 64 after Galaxy 2 you'll realise it's actually not so bad! At one point I jumped and shook the n64 controller and fell to my death. Felt rather silly after that!

I've gotta agree wholeheartedly.  The controls are floaty, and have bad response time.  What I have played of the SMG games I have enjoyed though. 

My sentiments exactly. Mainly the camera. It does the job but there are some cases in which it does a terrible job. Resulting in me falling off the platform more then once.

I agree, on both the camera and controls.

You can find things to complain about Mario Galaxy, but controls and camera don't really come to mind at all.
 
But the controls are definitely a few microseconds less responsive than Mario Sunshine's, especially the analog stick. But you won't really notice it unless you only play Mario games.

The controls weren't great but with how good the rest of the game was I hardly noticed.