I know I am late to the party, but I just wanna chime in on the VA vs Loh match. I think the match was much different than their WC match where VA was out of gas after a tournament marathon.
This time, Loh beat VA somewhat easily because he took away one of VA's most important shots: His lift. How/why he could do that was probably a combination of possibly a few things: His beat VA at the net, maybe VA nerves / Loh played freely, maybe them being training partners, but also the speed of the shuttles (fast). LZJ also said that the shuttles Friday evening were faster than in earlier rounds.
Yes, it is possible that Friday evening had significantly faster shuttles than the rest of the tournament because this was the first time in the week that the hall was packed (you know, because, Friday evening), which increased the temperature in the hall. They only test the shuttles
once per day (in the morning). So it is possible that the shuttle they picked Friday morning was fine most of the day and then was faster in the evening. And then they picked a slower speed in the weekend because they learned the lesson (I don't know if this was the case as I didn't watch most of the weekend's matches). But I know that LZJ called the Friday shuttles "crazy shuttles" and he played the match before VA vs. Loh.
It looks like we could get a VA vs. Loh in French Open as well. I hope we get that and if we do, I am excited to see if VA has managed to solve Loh. I know he won't rest until he does, even though they are good friends