HHH could tell a story in the ring better than Austin, Rock, AND Taker. I'd say he's by far better then them in the ring and possibly very close in mic skills, but yeah the fact remains that Austin/Rock were bigger draws, but a lot of the Attitude Era revolved around Triple H. He also carried the WWE into the next era, i.e. the current era.
I don't think you are watching his matches close enough because for the most they're brilliant. There's only a few people who can tell a story in the ring like Triple H can and he wrestler different styles as well. One big aspect is how well he can sell, I honestly think he's the best hardcore weapon seller of all time...
If I may ask, when did you start watching wrestling?