Would Roper or Williams pose any challenge to Lee at all?
Assuming that Mr. Han was able to force Lee to fight with Roper or Williams in the tournament with the agreement that they would not be killed and that it was needed?
I would have loved to see Williams with his tough style and moves fight Lee, he might have been a real challenge, Roper was tough too but would probably not be as tough as Williams was, both were just close to Lee in terms of ability to pose a threat in friendly fighting.
I would also like to see Roper and Williams be goaded into fighting each other, in a non lethal fight where Han forced them to fight, that might be great, holding back but still putting on a good fight.
And Roper being forced to fight Han would have been great, but he might have struggled a bit too.