Wow, way to necrobump! :p
I'm currently playing through the Trilogy and find the games to be much easier that the GameCube versions, I've completed Prime 1 and breezed through it, compared to the way I struggled with the original. It's mainly due to the controls, they make for a much more comfortable, easier and faster experience. I couldn't believe how fast the final boss in Prime 1 went down. The hardest ones for me in that game were the Omage Pirate and Ridley.
Right now I'm on Prime 2, and whereas I stopped way early in the original game and never looked back (never even made it into Dark Aether), I'm finding the Wii version infinitely more enjoyable, again, due to the controls. I've heard some things about how hard the Boost Ball Boss and the final boss are supposed to be, so I wonder how I'll fare against them.
After 2 I'll get started on Corruption, even though I already played and completed the first version. Then I'll probably have a more complete picture of how the games stack up against each other, with all having the same controls.
Also, I think one of the things that make the games hard is the lack of save stations, they're very sparse, few and far between, so if you do happen to die, you'll have to replay a large chunk of game, which might put some people off. I know it did me on the original Prime 1 and especially 2. Still, they're part of what makes Metroid Metroid.
Nintendo Network ID: Cheebee 3DS Code: 2320 - 6113 - 9046










