As somebody who has played this series for way longer than I should have, I can vouche for one thing. Just about every time I play somebody with QC in the name their teams always feel and appear to be quick, crisp, and fast no matter how bad of a team they have. Against these players my teams always feel like they are skating in mud rather than on ice. I have heard A LOT from other streamers of the game that they experience the same kind of annoying issues.
I am honestly not sure why this seems to happen all the time, but having 50 ping on our end while QC has 5 ping would make logical sense. If that is not the case for QC players then I'd like to know why there is such an obvious performance difference between the players.