DruggedFox and Moon definitely were the pain points, but my thinking I guess was that Hbox should have made quick work of Wes and then gotten SFAT down more to prevent most of that from happening.Hbox not doing all that well hurt, but didn't ruin them. And Duck did fine given he had a hard counter on the opposing team.
Druggedfox and Moon losing all 8 of their stocks to SFAT and the overall decision making by east coast is what messed the whole thing up. They should have sent Duck against SFAT since he's good against Fox, he would have either beaten him (and then lose to S2J but still have had a strong contribution) or left him with one stock where sending Moon may have actually made sense. Instead they sent Moon first, who just lost to SFAT earlier. Then DruggedFox happened.
I agree with sending Duck in vs SFAT instead, but Moon made sense. Even if he lost the set earlier that day, it was game 5 last stock because of a phantom Fsmash. Based on that set, could be reasonable to expect those two to trade stocks pretty evenly.