Looks like the Vapor-X is clocked 735 over 725 and the memory is clocked 1050 over 1000.
Same manufacturer so Vapor-X is better
The ASUS is clocked 765 and memory clocked 1125.
ASUS is a good brand, and they were nice enough to OC it for you. Since it comes that way from the manufacturer, the OC will be warrantied.
Get the ASUS hands down.