The Roger Ebert quote is odd, since he also wrote this:
His name is Sylvester Stallone, and, yes, in 1976 he did remind me of the young Marlon Brando. How many actors have come and gone and been forgotten who were supposed to be the “new Brando,” while Brando endured? And yet in “Rocky” he provides shivers of recognition reaching back to “A Streetcar Named Desire.” He’s tough, he’s tender, he talks in a growl, and hides behind cruelty and is a champion at heart.
And he's right about Stallone. He had the chops to have a far more critically-acclaimed career and chose the box office instead. Seagal never had that option, because dude straight up can't act.
Draft Barron Trump

A piece of wood has more acting credibility.
Chopper: I'm just a bloody normal bloke. A normal bloke who likes a bit of torture