I dont give gasquet much chance against ferrer. Their head to head record is 7-1 for ferrer, all of them straight sets. I remember their match at the AO this year, it was basically ferrer doing what he does best, scrambling and grinding. Gasquet was hitting the occasional spectacular backhand winner, but never really had a chance. Ferrer looked like he wasn't afraid of gasquet's backhand at all.
But that's the most unpredictable quarter obv. Murray could suddenly be healthy and play somewhere near his potential and take it, Isner could run hot in tiebreaks and win it. Ferrer is by far the most consistent player in that quarter so I'm betting that will be good enough to win.