That's a commendable attitude and I wish more people would think that way rather than following the mainstream.
But Other M still sucks, Prime is a much better game in every way. You'll see once you play it, especially if you're coming from Super Metroid and Prime. If it's gonna be your first Metroid game, start with Zero Mission, Fusion, or Prime, and then play Other M last, trust me.
But all those statements ARE true.
Sakurai himself said Melee was his magnum opus because of the effort he put into it.
I haven't played Sticker Star yet so I can't give my own opinion on it, but TTYD is incredibly charming.
And Other M is easily the worst entry in the Metroid franchise. It takes away the exploration and solitude that built the series and it tried to become this boring action packed narrative that basically revolves around Samus going around, being useless and crying like a little *****. Really think about it, in the context of the narrative, Samus wasn't even necessary. And lets not even get into the gameplay elements. You can't seriously play the refined game that was Prime and then go play Other M and tell me you think Other M is better, or at least a worthy of sharing the spotlight.
It's like comparing a Vanilla Creme Brulee to Skittles an saying the Skittles are just as good. No, they're not. Not if you have taste at least.