I said I GUESS that's your point, but it's hard to tell since your OP is disconnected from your Thread title.

1) Agreed.

2) What I was pointing out was the fact that you said, quite clearly, "let's not drag PS/XB into this comparison - buuuut I'll do that anyways, just to point out that they're doing things better than Nintendo. But please don't mention them again." I'm not actually arguing the point that Sony did or didn't make new IP's, just the fact that you're using them as an example AFTER you said yourself that this isn't about them or MS, thus ecxluding them from the discussion.

3) Wii U DOES have new experiences, as have been shown time and time again in this very thread. You must have seen them? Nintendo have always excelled at doing new things with their existing IP, and that hasn't changed. Maybe the biggest fail of your OP is that you don't include handhelds. Nintendo have TWO consoles out on the market, you know, and excluding one of them in you OP isn't quite fair, since Nintendo is doing great work with the 3DS. They single handedly turn that ship around with a price cut and great games (which incidentally uses new ideas in them). And what you're really saying in your third point is this: PS4/X1 is only selling because of third parties, because none of them have any new experiences to offer (none that matters anyways).

But I do agree that Nintendo needs more diverse games to truly succeed. What they're doing with their own IP's are great (just look at the difference between SMG and SM3DW), but they need more than that. Their own IP's will ensure that they live on, but to truly thrive they either need the 3rd parties in force, or something truly new - like the Wii. But accusing them of getting less and less creative isn't fair, nor true.

Merely making a general observation.

I had assumed the argument was self-evident, such that the statement didn't even need to be made (and am somewhat bothered by the fact that i had to make it in the first place).

Getting Mediocre review and selling nothing does not earn it a classic rating in my book.  SOCOM 4 got similar scores and sold badly, and I wouldn't mention it as one of Sony's best.

At this point I just want to say that I am not saying Nintendo makes terrible games. They just haven't made almost anything new that is good for a long time.

Does anyone really disagree that over time Nintendo has come up with less and less new IP's, and that possibly it affected their sales?

Guess what, apart of heavy rain and TLOU, I couldn't imagine myself playing those fucking generic and boring games you mentioned. It would give me aids. You like them ? Ok, cool story bro. 

Now the top 15 of most sold games of all time:

ALLLLL NINTENDO

Now the top 30:

All nintendo, minus 3 games from take two, 1 form microsoft and 1 by Sony and 1 by activision.

No one can match Nintendo son.

Hang on here.  PS3/Xbox 360 fans have been saying for years how their systems were so many times better graphically than the Wii.  Now, the Wii U is more capable than those systems, yet you say "slightly better graphics" in comparison to the Wii.  You guys really need to make up your minds.  I guess the PS3/Xbox 360 had barely better graphics than the Wii then....right?  Also, most of the causals that would buy Wii Fit U most likely have a board already from their Wii.  You can download the game for free and buy a meter for $19.99.

Also, I'm playing Super Mario 3D World and it's awesome.  To bad peoples "hate" prevents them from playing truly great games...it's their loss.

Stop hating and start playing.

To an extent, possibly, though I would argue the extent is limited even if true, since many of their "core" new IPs haven't really been their strongest sellers even if they were more critically acclaimed (like Pikmin, for instance).

In lacking third party support, Nintendo's power has to come from differentiation, which they do to a greater or lesser degree. N64, GameCube, and Wii U so far have had less differentiation, while Wii had a lot of it, but it's not about being "samey" within their own first-party games, but rather running similar games to what you can get on other platforms (but then get all the third party games too). GameCube was driven by Smash Bros Melee, a game that was wholly unique in its generation. Wii sales were driven by all kinds of unique games.

Wii U's bigger unspoken problem is that Nintendo is not doing much to differentiate it from the 3DS. Now that their handheld games can resemble their console games and the 3DS is getting first dibs on many franchises, people are going to see less worth in the more expensive home console (even as the console entries are superior in many cases, a la NSMBU vs 2, or 3D World vs 3D Land, or likely Kart 8 vs Kart 7)

It's easy to have the highest selling games when there are so few.  Order of total software sold by Platform:

PS2

PS1

Wii

360

DS

PS3

Notice how even the juggernaught of the DS has had less software sold than the 360?   Also the 360 is close to overtaking the Wii, and the PS3 is on track to overtake both.  The PS3 just had too many exclusives release close to each other.  I didn't mind because I loved them all.  Oh and LOL at LBP and MAG being generic! I laughed pretty hard at that one...

So you like Nintendo.  Great!  But do you honestly think the Gamecube had better and fresher games than the N64, or the Wii the gamecube, etc...?

Well...okay. I don't see how you telling him your software preferences is relevant to what he said in any way, but suit yourself.