That kinda highlights my point. ME2 is technically more "fun"….because it's essentially a shooter, not really an RPG.
ME1 is a brilliant space-jock sim, born out of ideas like Star Trek. It's flawed, but for me it is to modern gaming what Buck Rogers: Countdown to Doomsday or Star Control 2 was to 90's gaming - the best "space-jock/commander" RPG experience you can get. Whether you like that depends on what you connect with, enjoy, and are after. If you're playing it for the combat, it's not the game for you.
Whereas ME2 was a shooter with a few dialogue options. I enjoyed it myself to a fair degree, but whereas ME1 blows away pretty much any other game trying to do what it did, ME2 is a shooter with average/poor shooting mechanics, and there's a load of games out there who do what it tried to do better.
Simply put, ME1 is at the top of it's field, ME2 isn't. Whether you like each field is a different story, but the core of ME2 s an on-rails shooter with a few choice elements, and to see it included ahead of ME1 in these lists only shows one thing to me - that a shooter can be passed off as an RPG if fluffed up right.