No. With only Lucas cut, this would mean the roster would be 38 (apparently all brawl characters return EXCEPT Lucas for some reason!) + 1 Pichu (Who is bad anyway. Just why?) + K Rool (Which is pretty much the only good thing in this) + 1 Capcom rep (ahaha no, that isn't happening anyway, only 1 3rd party rep per company. Besides, roster was decided a while ago so why would only this character be unknown) + the 9 newcomers we have confirmed already means... 50 characters. That doesn't account for the Gematsu leak being true though, which has 3 other characters (Shulk Chrom and Chorus Men) and brings the total to 53. (Ridley being a boss would be pretty awful anyway). By the way, how many leaks this week claim that Falco is getting revealed this week? It was a deadline in the first one but with so many outright fake leaks like this one jumping on the bandwagon of a SECRET character, it's hilarious.
So yeah, leak is pretty terrible aside from K Rool being in it, and it's fake anyway so there's no need to worry.
EDIT: derp, Snake is good too. Ganondorf is a specific detail but would also be good. But aside from Ganondorf, K Rool and Snake, no.