I have never played RE4, so I don't care, & it's not my kind of game (& I'm not legally old enough
) So THERE 
& MP2E isn't too hard, It's just boring & slow, & it's too frustrating when you DO die, but there hasn't been a save point for ages, for me to even want to play anymore.
The bosses in MPH are far too repetetive, & the planets are tiny, plus, every single time you beat a boss, you jave to evacuate, it's fun to do it once or twice in a Metroid game, but it's too much otherwise, it just gets annoying. Also, there aren't enough enemies in the game, just upgrades of enemies you've already fought, & for some reason, the enemies (except good ol' Zoomers) in the game are really annoying to fight. Especially Guardians, although I like their design.
Although my bro just completed the good ending, & I thought it was great, Samus honestly looks better on DS FMV than she does on MP2E 
It's at times like that I really notice how awesome the DS' FMV is, they really should use it more often 