I don't think that is a reason, and if it is then it's not a good reason. I, for one, was attracted to melee so many years ago because of combo videos I found, and 1v1 videos. I yearn for competition, and once I found out smash was a highly competetive game I indulged myself with video after video and began practicing. Now, is wanting to play a new game a good reason, yes. But, don't make silly statements like Brawl has more promise than melee or that I will be missing out on ATs, and tournaments. I could care less, I tracked Brawl ATs for several months before I gave up on the game. There are no game breaking ATs and the skill gap, regardless how much you argue about this, is very small. I mean I see random names playing established players in Finals of tournaments. This may be the noob dream finally getting to play known players, but it also goes to show that anyone can be good at this game. Meaning anyone, not people who practice everyday, not people trying to get better at fundamentals and understand of the game. ANYONE can be good at brawl, its so simple in comparison to the previous smash titles.
With the lack of hit-stun, it doesn't matter how many ATs you find for brawl it will remain non competetive. Unless some amazing AT comes out that allows for hit stuns. In about a year brawl will be forgotten. Quote it and remember it, I'm sure people have said it before but I'll say it again. Brawl will eventually die, soon, and before melee dies. This is just like the counter strike community when source came out. Even with big corporations and leagues backing source, everyone knows 1.6 takes more skill, and at an international level 1.6 is still bigger than source. The same will happen with brawl. Soon people will give up defending it because they themselves finally realize brawl is inferior, and melee will be respected by the players, the real players who matter. Not the random kid who bought brawl on release, found smash boards on a whim, and self proclaimed himself as a smash expert. Which most of you brawlers are. This may be ignorant for me to say, but so far it's working out for me, people who joined smashboards Feb 2008 and beyond don't know what they are talking about. So, I don't listen to them. Feel free to reply, just know if your join date is past feb 2008 I skipped your post.
tl;dr melee>brawl