Mewtwo can get trick as well, though, and can do everything reuniclus can do without having to set up TR while maintaining more offensive pressure, virtually the same bulk, and useful moves like will-o-wisp. I also can't see reuniclus realistically setting up TR and calm minds seeing how crappy psychic typing is in ubers. But I'm not uber whizz, so don't quote me on it. There just doesn't seem any reason other than this research week that you would ever competitively use reuniclus in ubers.
A man can no more diminish God's glory by refusing to worship Him than a lunatic can put out the sun by scribbling the word 'darkness' on the walls of his cell. ~C.S. Lewis