Miles & copay vs. GPU
Flying LAX-PVG in December. Is there any difference between priority for clearance on a G ticket with Miles and Copay upgrade ($600 each way plus 30K miles) vs. purchasing a W fare and using a GPU? Currently inventory is showing R0, However, United.com is allowing me to book a business saver for 70K miles each way even through it also shows I0.
Thanks!