I'm generally aligned with these takes. Fournette has just arrived, and I think we have yet to see how he'll be utilized and how this will pan out.
Just from the eye test yesterday, RoJo loked to the be the better back. How much that was attributed to time in scheme, who knows, and to be fair, both backs were facing a really stout run D which contributes to how both looked.
But Fournette did look a little plodding and running with less "vision" -- both were met hard on the ground but RoJo seemed to make more out of nothing more consistently. It's a really small sample and we can't discount Fournette's prior success. But we also can't discount that there was a reason why JAX was comfortable letting him go, and it may not have only to do with money and attitude. It could be that they saw Fournette was more name brand than execution. Still a long season, and still lots to pan out. Not saying this is what it will be but having Fournette be a backup/CoP/short down role to Rojo as a starter with the majority of carries is more a possibility in my mind than it was prior to week 1.
The idea that regardless of how this pans out, Arians will find a way to muck it up is also relevant.
@btemp that's some pretty salient analysis there, and just watching what Arians did with Barber and Rojo over the last few years has been baffling. Not only didn't he carve roles based on where these backs' talents and performance led, but he also didn't seem to make changes when it was clear that RoJo was more productive last season (or when Barber was more productive the year before) -- it seemed like an RBBC without rhyme or reason, choosing to start one back the game after the other back had a great game against a similar D.
In the end, I think that no matter if Fournette finds TB to be an incredible breath of fresh air to reinvigorate a promising career, or if he pans out as a sluggish plodder as he's sometimes looked (including this week), both Fournette and Rojo are limited by Arians' scheme and approach to using both backs (or more to the point, the lack of a scheme/approach).