You want to talk athleticism? No one in the NFL has been able to stop the Tony Gonzo, Jimmy Graham, Antonio Gates. You can literally pick up almost any SF out of the NBA, teach them how to play with pads for a couple month, and they're not only play well in the NFL, they'll dominate. Some of these tight ends barely played much football growing up and no one in the NFL can stop them.
Gonzo could never make the NBA. No chance. Neither could Julias Pepper. Neither could Graham or Gates. THey would have no shot at the league. NBA most competitive league in the world by far.
People call Calvin most athletic receiver of all time.
Lebron runs faster.
Jumps higher.
Is much taller.
Much stronger.
Oh but let me guess, "one hit to Lebron's lower body and he's done, right?"
yeah Lebron weighs as much as Defensive ends in the NFL by the way.