I personally do not think that Owens will have much impact on the running game. Did PHI rushing totals go way up with Owens? (I believe they went backwards). Did Randy Moss make the Vikings running game top shelf (they never were great). Did Moss have a major impact in OAK last year? Yes, Jordan ranked well, but that was mostly due to his receiving numbers and lack of a backup that took away carries. I'd include SSMith in this list (or Muhammad), but the Panthers RB corps was banged up so it's hard to argue one way or another.
i'm not checking the figures, but didn't MIN have some good years statistically in the run game? i'm pretty sure robert smith's breakout season (before he retired prematurely) coincided with moss being on the team... in theory, it makes sense that defenses heavily distracted by likes of moss & cris carter would lead to situation where RB rarely sees 8 in the box... smith was a sprinter at ohio state & had big time speed, which enabled him to exploit some of the big seams that the dangerous WRs afforded him.
THere have been 41 teams that had at least one WR that had 1,400 or more receiving yards in a season (a couple had two, but I only considered them as one team). The average rushing total for that team's leading rusher was 1,007 rushing yards. The median was 950 rushing yards.However, the breakdown is a bit interesting, as RBs tended to do really really good, or really really poor--making the "average" a bit useless. The high end was Emmitt Smith in 1995 with 1773 yards (paired with Michael Irvin). The low side was Darick Holmes with 386 in 1998 (paired with Antonio Freeman).
Without listing them all, here are the breakdowns,
2 RB had at least 1,700 rushing yards (out of 41)
2 RB had at least 1,600 rushing yards
7 RB had at least 1,500 rushing yards
9 RB had at least 1,400 rushing yards
10 RB had at least 1,300 rushing yards
13 RB had at least 1,200 rushing yards
16 RB had at least 1,100 rushing yards
19 RB had at least 1,000 rusing yards
23 RB had at least 900 rushing yards
30 RB had at least 800 rusing yards
32 RB had at least 700 rushing yards
34 RB had at least 600 rushing yards
35 RB had at least 500 rushing yards
40 RB had at least 400 rushing yards
41 RB had at least 300 rushing yards
I have nothing to compare this to (ie, how #1 RB did without having a 1,400 yard WR, nor do I have the energy to try to figure that part out.
But it does seem that some of the great offenses (Dal with Emmitt and Irvin, Ind with Harrison and Edge, etc.) did do extremely well. IMO, some of the other teams had a 1,400 yar receiver BECAUSE they did not have someone to run the ball--and that is what's distorting the results. That leaves us with opinion on Julius Jones--is he closer to the Barry Sanders, Emmitt Smith, Clinton Portis class or more toward the average to below average class?