Sorry man, but having grown up in the NES era, I can absolutely say with extreme certainty that the NES had the most profound effect on the video game industry more-so than any other console.
Technology-wise, it innovated the concept of the d-pad, as well as the standard A and B type buttons, which would be copied by Sega and NEC (Turbo Graphx), among others. It also added the start and select button being on the controller.
It also innovated many conventions of gaming, within some of Nintendo's own main franchises, that are still used in most games today. For example:
Super Mario Bros. - First true side scrolling game, also set the convention for "platformer" type games, including physics, the idea of multiple power ups, level structure, worlds made of a set number of levels, boss battles at the end of each said world, hidden "bonus" areas in levels, etc. etc. etc.
The Legend of Zelda - First true free roaming adventure game. There were other similar games that predate this, but none with the true freedom of moving around an entire gaming world that Zelda provided. Also set the standard conventions for adventure and rpg games to come, with the "overworld" and "dungeon" mechanic of the gameplay, gaining money to buy upgrades, gaining permanent power ups/items, etc.
Metroid - Took Mario's Side Scrolling gameplay, which was still freshly innovative at the time, and expanded on it, not only including vertical scrolling levels in addition to the horizontal, but also providing free range to go back and forth in the gaming world as the player sees fit, making first real use of backtracking in an action game. Also took the Zelda idea of permanent upgrades to powers, and expanded it by having upgradable levels of your weapon and abilities throughout the game.
Punch Out - Not considered by many to be a "True" fighting game, but predated the original Street Fighter by introducing large, colorful characters into a fighting game environment, wherein each character has over the top personality, expression, and individual fighting styles and moves, each also complete with their own personal strengths and weaknesses. No fighting game before Punch Out (the first edition of which hit arcades in 1984), offered any of that. It even had the opponents facing in a pre fight "face off" screen, complete with personalized sayings and smack talk. All of these things would later be used in Street Fighter, Street Fighter II, and every single game that copied them for years.
Tetris - Not CREATED by Nintendo, but Alexey Pazhitnov's ingenious creation was first really introduced to the world at large through Nintendo, who had gotten the rights to it. Through the NES, but also even moreso the Game Boy, Tetris became a house-hold name, and the basic foundations of most puzzle games thereafter were set in the original classic.
Not to mention the fact that SO many great gaming franchises either saw their birth or had major appearances on the NES. No other system, even to this day, really had the sheer volume of great franchises all in one place that the NES did. I mean seriously:
Super Mario Bros.
The Legend of Zelda
Kirby's Adventure (which was more popular than the original GB game Kirby's Dreamland)
Fire Emblem (in Japan)
Mother (also in Japan)
Famicom Wars (the precursor to GB Wars, Advance Wars, and Battalion Wars, in Japan)
NES Open Tournament Golf (precursor to Mario Golf)
Wizards & Warriors
Joe & Mac
Mighty Final Fight
Ghosts n Goblins
Gargoyle's Quest 2
River City Ransom
Prince of Persia
etc. etc. etc., the list goes on
The SNES was an amazing console, and had/has an amazing library of games, but while it certainly had better looking games than the NES, and was superior at least in it's selection of fighting games and rpgs (two genres that didn't really take off in a big way until the SNES era anyway), I would still have to say the NES was king.