LOL He doesn't know who I am when we speak of the Victorious Victini... Cute.
Here's my response via what we've learned about the Pokemon series. It's in my Victini blog as a rough draft. No one commented on it, so I guess now's the perfect time to post it.
Victorious Keys: Victini’s for SSB4 (Title)
Okay, so let’s face it- Playable Pokemon characters is and has been the most argued over section of Super Smash Brothers. The reason for this is quite simple. There are more than 600+ Pokemon, each having their own unique capabilities, but we can narrow down who might actually get into a Smash game due to their overall appearances/abilities.
For example, where we’d start figuring who might get in started with Mewtwo. Let’s see here… He had a popular movie and overall huge popularity in the Smash community and outside, which is the Pokemon community. Also, to make sure we don’t point at Magikarp and Feebas for being liable playable characters, he has a Smash-reliable moveset, including (A) moves and jumps.
To also add to the assumption that movie, popularity, and relevancy are the keys of discovering a new Pokemon character, we have Lucario. Lucario had a movie, became more popular than Blaziken and Deoxys, which would have been valid options at the crunch time for Brawl’s release, and was more close to Brawl’s release then the two options. Pichu was in SSBM because of his popularity, while being second banana to the mascot of Pokemon, Pikachu. Jigglypuff is part of the original 12, allowing her a VIP pass in SSB, so to speak, and Red (Pokemon Trainer) was in because of his Pokémon’s popularity, along with his. So, in short, Pokemon characters are chosen by their significance of the present date. Some would argue that Red is the breaker of that logic, but his appearance in Fire Red and Leaf Green denies the perishing.
Okay, now that I said that, let me explain why we can push Zoroark aside, and put Victini into SSB4. Zoroark did have a movie and is very popular in Japan, please note that. Victini has superiority in all slots, except Popularity, which he’s catching up on. He had two movies, being Victini and Reshiram and Victini and Zekrom. This, alone, beats Mewtwo and Lucario, along with Zoroark. Though he isn’t as popular as Zoroark, Victini is still quite popular, and one of the people who like him directs the Pokemon series itself: Junichi Masuda. Junichi Masuda is one of the founding members of Game Freak and serves as the Director of the Board. He is best known as a game director and composer for the Pokémon games. According to an IGN interview, Victini is Junichi Masuda's favorite Generation V Pokémon. Also, as a fun fact, he also likes Pichu, as he did in pre-Melee. Also, his arrival on the scene is much bigger than Zoroark’s.
The point I’m trying to break to you is this. Pokemon characters are argued over by far more than any other series for SSB. With what we’ve seen, there are three basic elements, or keys, that let a Pokemon be playable: Popularity, movie appearance, and relevancy.