Eh, just ignore him. He's not someone high on the totem pole. Sakurai isn't going to give Shulk the axe because one dork on Twitter thinks Smash has too man anime characters (which is such a blanket term since anime is a medium, not a genre) ...that's what I WOULD say if it wren't for his comments on Robin. You can not like Robin for many reasons, maybe you don't like Fire Emblem, maybe you don't like mage fighers, that's all fine. But to say you don't like Robin because he looks like he's from hogwarts and you don't like Harry Potter is an example of a wrong opinion. But seriously though people just ignore this jokah.
Anyway, back to what someone said in the page earlier, I really doubt we're getting any characters at Comic Con, especially newcomers since i'd imagine Sakurai would hype it up.