Well then that makes you a fool, given that the Melee was entirely leaked early by 1 source, and Brawl had 3 hugely legit leaks that confirmed every major detail but the stage 75M.
If you don't think "text leaks" can be true, you simply have no idea what you are dealing with. Smash Bros. is so prone to leaks, it is laughable. Like 3 different studios at Namco Bandai at the least, SORA, HAL Laboratories, Game Freak, the Pokémon Company, Capcom, SEGA, probably Konami, possibly Monolith Soft, etc. are all involved with the game. If you don't think they'll have leaks again, you're nuts.
The only non "text leaks" we've had were Miyamoto accidentally confirming Jigglypuff in Melee, the intro to Melee and Brawl having playable characters in them, the accidental video leaking by Nintendo for Ness, Lucario, and Jigglypuff, Anouma accidentally leaking Ganondorf, Sheik, and Zelda, and David Hayter accidentally confirming Jigglypuff in Brawl.