Oh, good catch. I blame NewGen XD
Yes, all the Heroes have the same names as from WC3, but they're not the same heroes. WC3 Mountain King has Thunder Clap, Storm Bolt, Bash, and Avatar. My Mountain King has Thunder Clap, Hammer Time, Drunken Stupor, and Avatar. Avatar and Thunder Clap, are, based off the normal Mountain King abilities, but Drunken Stupor and Hammer Time aren't the same.
That's how most of the heroes were created. They have one or two default abilities that were re-worked, normally their WC3 Ultimate and one of their defaults, and then 2 new ones.
Try the Tauren Chieftain, Shadow Hunter, or Paladin. That's the three classes I normally play.