Leo is one of the All-Time Greats. He does it all, just as Denzel and Tom.
I can't put DDL up there because he's done what...10 movies since My Left Foot and that was '88-'89? He also doesn't do comedy. And the closest he's come to fun is Bill the Butcher.
Johnny Depp was Elm Street and that was '84. Same year as A Soldier's Story. I would put Johnny Depp with Hanks and Denzel as far as generation.
Denzel actually isn't even this generation. This generation would be the Leo's, Damons, Wills. But when you think about Matt Damon, he doesn't have 1 weak role. You may not flock to see him but he does the best with anything he's given. That's superior talent. His most under-appreciated may be The Rainmaker
But who's the young one out there currently that's gonna carry it for the next 30-40?