Which do you think is the best video game,between Word of warcraf an Dota?

These are two of the most ever played videogames worldwide. In which you can master an heroe or several ones. The fact is that each of these epic games are really addictive and has a really demand among gamers.

I sincerely prefer dota cause i can play with a different heroe and take different roles in each single battle ,like middle,save line, Carry or support ,while in warcraf i have to do several missions to levele up ,and you have to develop that heroe until the maximum level.Well,that is my case wich of these two epic games do you prefer ?