Denis Ten did win the free skate at 2013 Worlds, by about 5 1/2 points.Patrick may have received a bit of "London, ON" bonus in 2013. Compositionally Patrick's program wasn't very strong, I think he should have ended it with Muzetta's waltz. He never slowed down in the middle section, which should have affected interpretation. So I think 9.50 from some judges was too much for these components. SS-wise Partick was above the competition, and I wouldn't say his presentation was bad, albeit a bit sloppy with these falls. Perhaps they should have given the win to Denis. He kinda stalked the jumps in the beginning and seemed to run out of steam a little bit towards the end, but it was mostly a clean skate. I think it would be nice to see some arguments why he shouldn't have won and who should have.
To "give him the win" the judges would have had to consider the point difference from the short program, which is not something judges are supposed to be doing.
If you want to argue that the short program point difference should have been narrower, you'd have to focus on what happened in the short program only, with no reference to anything that happened in the free skate.