Wow, it's just like Brawl days, when there wasn't any MG on Nintendo platforms except a remake on the GC, a console of the generation before! And there was to be a certain MG games exclusively to the direct competitor Sony, and that game is still today a KA for the PS3!
Yet Snake was in the game.
It's not a real problem how many games Snake had on Nintendo consoles. Why? Because he already got at least one (actually five), and Sakurai said that one game is enought for being in Smash. Now let's make a very simple reasoning:
-Snake is the most iconic, popular and relevant character created by Konami. He is almost a mascotte for them. Snake is the most suited for being the Konami rep.
-Konami was, is, and will be a supporter of Nintendo platforms, just like Capcom, Namco-Bandai and SEGA. So Konami deserves a rep.
-Metal Gear doesn't sell on Nintendo Platforms. All five games that have been on Nintendo platforms were commercial flops (except the first on the NES). How could you blame Konami for not waisting money in games that just few people (not enought for repay the effort) would buy? Would you blame Nintendo if they don't produce Wonderful 102 or Bayonetta 3? I don't think so.
-Considering this, why would Konami have to have a minor character as his Smash rep, while the others get their most know ones? It doesn't make any sense. You can argue that Snake made his name on Playstation, and I can respond that Sonic made his on SEGA consoles (and almost all the games that were realised on other platforms since then where pretty bad) and Pac-Man made his with the Arcade game.
And, finally, Snake have some relevance with Nintendo beyond the number of his games on Nintendo systems:
-While Snake may not be relevant for Nintendo, Nintendo is very important for Snake and MG history. The original version of Metal Gear for the MSX wasn't a success. It was the port on the NES that make the franchise popular enough for have a sequel (Kojima himself said that he wasn't considering to make MG2 until he found out of Snake's Revenge). Without Nintendo the first game would probably have been the last in the series, and not turning into the multi-millionaire franchise that keeps alive Konami by itself that is now.
-Snake is also one of the few TP characters that have Shigeru Miyamoto as a developer of one of his games. Neither Mega Man or Sonic can have this privilege.
-Snake was the first TP character to be in Smash, one of Nintendo's most important franchise, before Sonic, Mega Man and Pac-Man. You can say that was just due to Kojima asking it to Sakurai, but Nintendo agreed. I'm sure that if Sakurai wanted to add James Bond or Goku, Nintendo would have blocked him. They felt that Snake was a good addition and was deserving the spot Sakurai gave to him.
If my explanation made you changing your mind about Snake, you're welcome among us supporters. If it haven't, please leave us. I don't want to see Rayman, Paper Mario, Waluigi or Ridley in Smash, and this is why I never went (and I will never go) in their threads or fan-comunity. I have better things to do than say "Your character can't be in the game, and he sucks". They have their own reason for supporting them and I have mine for not supporting them, and I respect their opinions, even if I found them wrong.