What “elite” RB’s win super bowls now days?
All since the inception of the salary cap:
Terrelle Davis did it back to back.
Marshawn Lynch almost won two if not for running the ball at the two yard line (neglecting an elite back lost them a super bowl, opposite of your point.)
Ray Rice after going for 7500 yards(!) from scrimmage in 4 seasons
Corey Dillon in a 1600 yard season
Jerome Bettis, And then later Willie Parker after a streak of 1200+1400+1300 rushing yard seasons
Shaun Alexander would have if not for the worst reffed 4th quarter in Super Bowl history
Marshall Faulk in ‘99 and nearly again in ‘01
Jamal Lewis in the beginning of his tear to gain 10,000 yards in 9 seasons
The concept that a team with a franchise or highly paid RB can’t win the Super Bowl in this era is straight looney tunes. The exact opposite is proven time and time again.