Stats are not the only defining feature of a Pokemon, though. Ability, movepool, and typing all play a significant role in how a Pokemon functions. That's why low BST mons like Breloom and Dugtrio succeed in OU, while Regigigas and Articuno are slumming it up in NU.
If you were talking about in-game and not competitive, then availability gets added into that list of what makes a Pokemon good besides its stats.
It has been discussed, multiple times, in the past, and the idea always gets shot down because of this. If your initial thread is what you wanted posted in The Suggestion Box, it will most likely get a similar response. That said, I can undelete it and move it there for you, if you wish ^.^