Maybe I am not getting your point, but a 200lb guy with 90 strength would have a more dificult time dealing with a 300lb guy with 90 strength...CAuse the 200/b guy has to deal with an extra 100 lbs.
What needs to be done, if weight and height are not a factor than, even if 300lb player benches the same reps as a 200lb player - to represent the difference in weight, the 200lb player should be rated maybe an 80 str and the 300 lb player rated a 90 str....This, at this point in time, seems to be the only way to represent weight difference....else why would I not just have my 90 Str 200 lb guy run block? cause of other ratings? maybe if I adjust my sliders so blocking is better, but I think we all know, ratings really don't matter, it is sliders and game difficulty that matter, such as All-Pro or All-Madden....
It is a joke...don't even look at ratings, just adjust sliders and move on...