Nswb is fun for me, but mario glalaxy is innovative.

NSMBW wasn't all that for me while Super Mario Galaxy is my favorite game with Mario in the title.(I say that because Luigi's Mansion is my favorite and Wario is better than Mario In my opinion)

i haven't played NSMBW yet.

Eh...what do you mean?  NSMB Wii was made specifically to be like its DS predecessor.  And did that pretty much as expected.  I would venture to say, it actually had less orginal level design than the DS incarnation.  Much of the levels and gameplay in NSMB Wii was repetative and consisted of either doing a lot of jumping up on platforms (such as all the ghost and most of the Castle levels) or avoiding pits by jumping from platform to platform.  Sure, the game was fun, but it did seem the developers had a one track mind when it came to level design.  The same can't be said when it comes to NSMB DS, or Super Mario Galaxy for that matter.

I'd also like to point out that you don't even need to use all the items in NSMB Wii.  You can go th entire game without using the Tiny Mushroom (I think I only used it once to get one Special Coin).  And pretty much the only power-ups you do need the whole game are the Spinning Mushroom and the Penguin Suit, which override everything.  Which once again, point to my one track mind level design.

At least in NSMB DS you had to switch to other power ups like the Tiny Mushroom/Fire Flower/etc to get coins.  It made item swapping much more necessary.  And of course, in Super Mario Galaxy, every level provided you with the needed items, which there was a ton of power-ups (one which even found its way into NSMB Wii).

I think the level design in nsmbwii was very inventive tbh.

I'd have to play the games again, I haven't played NSMB DS in a while. I just recall finding the game somewhat average (my least favorite Mario, though I've only played the console games). It's probably in the level design, backgrounds, and the fact that I prefer my Mario's on a console (much more on screen). Then there's the bosses in NSMB getting killed in a few fireballs. It's also hard for me to pretend NSMB Wii doesn't have multiplayer, which is what really makes the game my favorite...

I don't think the lack of item requirements hurts the game - I prefer it that way, actually. Obtaining a tiny mushroom swap or playing through while tiny was more tedious for me than anything. Someone else will have to argue this, I really don't remember enough about the DS. I only played through once, though I did collect all the coins.

I do think the item swap made NSMB's difficulty a joke, though I guess I find all three games a little easy. Between the wall jumping in the 2D games, and spinning moves in the Wii games, it's hard to make a mistake that leads to death. SMG had some difficult sections, but none of it was in the platforming.

NSMB Wii based solely on "fun". Mario Galaxy has amazing music, graphics, and pretty much everything else, but I just love old school 2d platformers. and with 4 players, nothing is more fun.

Love both games but Super Mario Galaxy I consider to be the best game I've ever played

NSMB DS isn't a real Mario game because it's on a handheld. The handhelds don't count. They've never been close to their respective real version on the console.

Do the SMG>NSMB Wii people also think Mario 64 is better than Super Mario Bros 3?

They are both good. Glad they make both for us all :)