They did copy dota and the whole concept, with the heroes, items and creeps. Yes. Still, the game is great, a perfected and better version of the WC3 dota. I don't see anything bad about copying an idea and then making something better out of it.
The only "bad" thing about the game is that there's only 8 heroes. Besides that, awesome.
wow nice game i only liked dota when playn warcraft now looks much better what is the gameplay like?