Between the two the one I'd be signficantly more likely to replay is CT.
I'm glad to watch these clips and see that they at least gave you some new beams besides the same old wave and ice beams. I had lots of fun "customizing" beams from the five they give you in Super M but in retrospect that sort of thing probably doesn't vary the gameplay that much.
Since I can't find EarthBound in cart form anymore (trying to talk to some old classmates from high school who may have my old copy for purchase though) I purchased Super Mario RPG used-cart and have played the first hour or so of it.
And...uhm...I'll report back to you on this, but it's, like...uh, not very good.
Just after you posted this, I found Nintendo taking down another free-to-play game that steals their property...