Okay, I guess I'll re-word what I said. I'm not stating that Mario was made because of CoD's success (), I'm saying they share similar business/consumer models and have lack of any noticeable gameplay changes. Now, with that out of the way...
SMG2 was similar in style but different than SMG. And Mario is not an answer to COD. The NSMB games are just the current 2D Mario games, there's only 2 of them. There were only 3 "Super Mario Bros" games before that, and on NES, SNES.
You might as well have said that OoT is the same as Skyward Sword, using a particular formula does not mean two games are the same. NSMBU is the same formula as the OG Super Mario Bros games and New Super Mario Bros games, but there has been a lot added in the form of powerups, mechanics, and controls.
For a platformer to be fresh it needs new and unique platforming levels, new ways to deal with enemies, and new moves that you can take advantage of. Each Mario game does exactly this.
For a first person shooter to be fresh it needs new weapons, improved shooting mechanic, new tools or powerups, etc. Have you ever wondered why Halo felt like the Super Mario of first person shooters by adding in new powerups and weapons but keeping the levels largely the same in style, and in some cases, layout? You want to add things that are interesting, but the last thing any company wants to do is alienate their fans and prevent them from buying their next game by stripping out ideas and mechanics that make sense already.
-No, there are actually 4 installments for the NSMB franchise (DS, Wii, 3DS, WiiU). And technically, the old school Mario games consisted of 4 SMB games since Super Mario World over in Japan is known as Super Mario Bros. 4.
-The NSMB franchise is way different than that of the original games. Not only does Mario have his moveset from SM64, but the challenges have dwindled down, the level design is roughly the same art direction, style, and layout. At least with SMB2USA and SMB3, there were vast changes to the Mario franchise that pleased people, such as the addition of maps, bonus levels, ways to easily skip levels, secrets such as the white blocks, etc. and SMW introduced Yoshi, the Ghost House mazes, first instances of coin collecting, etc. NSMB from its launch has kept the same moveset with different items and very little changes in the atmosphere of the games and level design/layout.
And you're trying to say that OoT and Skyward Sword have a particular formula? I would play them again. I find them to be ENTIRELY different.
-Again, see my statements on Mario having the same movesets, barely unique item changes, and the fact that Mario doesn't shoot enemies with a rocket launcher or slices them up with a sword to kill enemies lol.
-I agree with that to an extent. Look at some franchises from Banjo-Kazooie. While Nuts & Bolts wasn't that great, Banjo-Tooie changed the gameplay from the first game DRASTICALLY and the sequel was a huge success.