Provided the 'vesa' driver is not chosen the test and probing should be fine as you say, I've just noted that in several cases suse and others have ended up with vesa rather than nv. Choosing a specific card should not effect configuration in any other way than driver choice (but not capabilities), and names in the config which are superficial. In any case, if the X test or configuration fails, this is likely the cause.
"..the triumph of evil is for good men to do nothing."
VIDIA video driver RPMs for Fedora
:: see yum repo at livna.org