Yea I guess a comparison to DoTA/HoN/LoL is a little unfair as it lacks most of the core components of the game (creeps, towers, farm, etc.); however, everyone still seems to draw that comparison despite the major differences in mechanics.
It is similar to all these games in its art style, isometric view, and that it is team-based pvp. I've heard some comparisons to WoW arenas though and, although I don't play WoW, I know enough about it to say that that is a probably a much fairer example.
I think the major drawback right now is the lack of population on NA servers. I was in queue with 4 other people TOTAL for all of NA at around noon on a Saturday. EU had ~400 players when I checked immediately after.