Personally I'd put Javonte firmly in the average category. His 2025 numbers were excellent, but largely supported by massive success early in the year. Since week six his yards per carry dipped down to just over 4.3 which is still productive, but is more in line with typical average runners like Travis Etienne, Tony Pollard, Rico Dowdle, etc. We can't completely rule out his early season dominance, but its a fairly small sample size to use, and that 4.3 YPC closely reflects his career average and is in line with this 4.3/4.4 YPC numbers pre injury.
The other thing with Williams is he benefited from facing the 2nd fewest number of average defenders in the box this past season. Only Chase Brown of the Bengals got to run against fewer light boxes. Having two elite level WRs is clearly a hack for rushing the football.
Last piece of evidence I'll throw out there is his salary. Williams was a FA this year and recieved just $8m per year putting him tied with JK Dobbins and Dandre Swift for 18th paid RB by AAV. To me that screams that the league views him as an average player.