With all respect for his immense talent, I don't think he'd do that well in the open.
Reasons...
1. His age. I know he won the WPC at 16, but the Open is, IMO even higher pressure than the WPC. Plus, a lot of his competition (Robles, Reyes, and many others) were, I'm sure, suffering a little jet lag problem. I know it took me 2 weeks to get over flying back here from New Zealand. This time, it would be Wu that was dragging from the travel, and not many of the greats that are in the Open.
2. While there were a lot of great players at the WPC, I personally feel there are even more great players at the Open. I know... there were some great players at the WPC, but not near so many as there are at the US Open.
3. The format. It's a lot easier to get through a lot of short races for a few long races in the end. It's tough to play 7 days of races to 11. If your opponent makes a mistake in a race to 7, it's a LOT bigger edge than it is in a race to 11.
4. His age. It's obvious he is a great talent, and has a great future in pocket billiards, but winning one major tournament, even if it is the WPC, does not make up for the experience and tournament toughness that the vast majority of the US Open entrants possess.
Oh, did I say AGE twice?

Yeah, I think age is a huge factor.
JMO,
Bob