I know. I just like these games so much, and don't find them overrated.
If I call a game overrated, it just means that I didn't like it as much as everyone else did, even if it was still pretty good.
I'll just go through a few of your choices now:
I disagree about Super Mario Galaxy being overrated. And how is Super Mario Sunshine overrated? People hated that game and call it the black sheep of the series, but I honestly believe that it is one of the best of the series.
Yes, Metroid Prime is definitely overrated. :P
Super Mario Bros. Deluxe is also pretty overrated, because it's really just a port/slight remake of Super Mario Bros. and Lost Levels on the GameBoy.
Super Mario RPG is kind of overrated, mostly because I consider Paper Mario The Thousand Year Door to be the best Mario RPG, rather than this game.
Agreed, Pokemon Ruby, Sapphire, and Emerald are definitely underrated!
Mario Party 9 was decent, but I really don't like all the changes they did to the series there, so I don't necessarily think that it's underrated.
However, a Mario Party game that is underrated is MARIO PARTY 8!!! I love that game.
No, I don't just stick to the popular opinion for no reason. Sometimes I agree with the popular opinion, and sometimes I don't. But yeah, I really do love Mario Kart 64 (and its tracks that I didn't find lackluster and boring), but I still believe that Mario Kart Double Dash is the best Mario Kart game. To be honest, I'm pretty sure people call the first Mario Kart game that they played their favorite mostly because of nostalgia, as that game is usually the one they had the most fun with.
For Super Mario Galaxy 2, I was arguing against all the praise that the game got by critics. That game is NOT a 10/10! I think the first one should have gotten a 10/10, and the sequel is at least a 9/10. I do love Super Mario Galaxy 2 a lot, but it's just that I love the first game WAY MORE. I didn't know that the sequel has a reputation like trash by fans.... It shouldn't have a bad reputation, because I think it did a decent job of copying its predecessor.
And New Super Mario Bros 2 was alright, but nothing compared to the first New Super Mario Bros, which was so much better. I think that New Super Mario Bros Wii is way too overrated by the way, because I really didn't like it that much.
Super Smash Bros. (N64) and Super Smash Bros. Brawl are the only overrated Super Smash Bros games, IMO. Melee is one of my all-time favorites, though.
I also disagree with Kirby Super Star being overrated.
And yeah, I hate Call of Duty. I never owned a Call of Duty game, and never will. I played it at my friends' houses several times though, and didn't like it. I hate shooter games. I only play games on Nintendo systems, and the PSP.
Super Mario World 2: Yoshi's Island is DEFINITELY underrated! I seriously LOVE that game!!!! <3
I also agree with Kirby Air Ride and Kirby's Dreamland 3 being underrated.
Yoshi's Story was... Meh at the least.
Super Mario Bros. 2 is AMAZING, so yeah. I agree. :)
And I obviously agree with Super Mario Sunshine.
And lastly, I think Mario Party 9 is also Meh.