Come on dude, you can debate those points but you cant sit there and say the best this that and the other when the numbers dont all agree with you.
O Line- debatable, Lions did have 2 on the all star team and the lineman of the year (again)
RB- you can definitely make a case for Roberts but Smith was the more durable with the better numbers.
receivers - BC had the numbers 1 and 3 receivers catching passes from a QB revolving door. Also, Simon was injured to start the year. First 10 games averaged about 45 yards per, last 8 when he was getting healthy, about 107 per game. So yeah, on the strength of Simon couple with the #3 receiver and Paris Jackson (plus a couple other capable receivers to fill in when needed) Im giving the nod to BC here.
I think the O line is probably the one that can really go either way, receiving and RB? Im giving the edge to the Lions!