From the quarterfinal round forward results must be verifiable therefore films must be posted by the winning player for all duels from that round forward.
I don't know, what part of that rule eludes you?
Yes, this is the rule as you posted :
Films must be posted by the winning player for all duels from that round forward.
With that, if the film is not posted, i.g., the rule is broken, then this applies:
Failure of the winning player to post films in these rounds will result in the win being awarded to that player’s opponent who must then post their films. Failure of the opponent to post films within 24 hours of such a determination will result in the original winner being reinstated. So how do you interpret this differently?
And why did you edit out your rules wall of text suddenly after I pointed this out to you?