Based on what he did in college Jarvis has the potencial but moreso he played OLB and won't have to convert from DE like Worlids and Woodley had to. That in itself should make the transition to the Pro's a little easier since he won't have to change positions.
Should he win out against Worlids it would give us depth behind Woodley as Worlids is better suited for that side, but at this point Jones has to prove himself in camp, the preseason to be considered a starter which would be rare in the Steelers defense.
Just a guess, he may split time with Worlids until he can win that position outright and be that bonus player for us that has immediate impact.
We still need a Safety and ILB and help on the offense with a RB, WR, but is it me or does anyone feel we still need help on our D-line? If we don't get another D-lineman, I wonder if there will be any changes on who plays where with our current group?
Btw, Congrats to all of you who picked Jones @ 17!