As of now, this is only a web ad.
As of now...
(UPDATED) The NY Times Mark Santora has Team McCain and Team Romney's back and forth over the "experience" thing.
Crib Note: Senator McCain has the "McCain Surge" (and more than two decades of national security experience) while Governor Romney (probably) has the Winter Olympics.
So, if likely GOP Primary voters want to elect a candidate who will ensure that the ski jump and slalom run are in absolutely tip-top condition well, they know who they should pick.