Ninja Gaiden (NES) - I noticed game gets a lot of love from people growing up in the 80s and 90s, but this game is just a broken mess. Enemies that constantly respawn the immediate microsecond you kill one, enemies that have a habit of knocking you in a pit, and actually making you losing your health, and some of the worst checkpoints in a video game ever. It's a good thing the second game fix most of the problems I had with the first one. It doesn't help that games like Revenge of Shinobi and Shinobi 3 showed you can do a hard ninja game, but without being freaking cheap.
Double Dragon 1 and 2 Arcade - as a brawler fan, I hate to say this but at the end of the day these days are just kinda average. Both games are slow and sluggish and methodical. That's not necessarily a bad thing, but it just shows you how far the Brawlers has come. games like Final Fight and Streets of Rage that came later outclassed them in every way. And even then, there are some arcade Brawlers from the early 90s that out class Final Fight as a whole (see Undercover Cops or Violent Storm). Hell, even Double Dragon Advance and Double Dragon Neon improve on all the mechanics in every single way.
Teenage Mutant Ninja Turtles the Arcade/Turtles in Time Arcade - I still like these games, but they are just button mashers. Now Turtles In Ttime on the Super Nintendo and Hyperstone Heist on the Sega Genesis, actually put thought into the moves you make. For example and Turtles in Time the arcade version, throwing is random while in the console versions, you can select your type of throw. The Sega Genesis version lacked the throwing the enemy at the screen maneuver. Most Konami arcade Brawlers fit this description.
RE4 - I like the game, but there are so many over-the-shoulder shooters that improve on every single way that it is kind of hard to go back and play again. Dead Space, Gears of War (not a fan), Shadows of the Damned, and Evil Within allows you to move and shoot at the same time. Shadows even allowed you to have a dodge roll. It's why I never really picked up RE5, which was just RE 4.5, but with Co-op. They should have just made RE5 single player like they originally intended.
Street Fighter 2 - Hear me out. I am a huge Street Fighter Fanboy, but even back then when I played other fighting games, there were so many that improved and did more for the genre than what Street Fighter 2 did in every single way. Just look at SNK's line of fighting games. After Samurai Shodown and Art of Fighting, a lot of their games is topple over most Street Fighter games. Especially when they kept be releasing the same game over and over. Now as in Kate is guilty of this to some extent with its King of Fighters games, but Capcom was way worse with this. The only reason Capcom was able to get away with this was because it was so popular and gaming consumerist didn't know any better.