In a Blizzard game, you have two or three races. They have a dungeon crawler quality item system on par with games like Diablo 2, spell casts on strike, special abilities, stat modifications, the works. There are 28 classes, each with their own set of skills to level up, in combination with the heroes racial skills.
They're RPG quality, persistent badassery, that you can level up from one game to the next. When you think of RTS games with command units, you think TA or WC3, the heroes in WBC3 are on an entirely different level. Why WBC3 is awesome is because it's not a basic RTS, not even slightly. There were some improvements though, like in game hero leveling. This isn't to say WBC3 is a bad game, it's fucking fantastic too, it just really bit the dust on some mechanics that were superior in the previous iteration.
WBC3 sucks monkey nuts in comparison to it's predecessor.
