The US effort doesn't seem to be that serious. C'mon, with Indy and CART, they should have
lots of drivers good enough to win.
I think it just reflects how much experience some countries have with open wheel racing. Brazil has great experience in this, as do GBR and Ireland. France... well, the French are just so damn competitive. The ROC championship, WRC, and F1 (but with a Spanish driver)... looks like they're set on world domination.
Other countries are just starting out. So it's to be expected that they'll suck in the first season. One thing, though... if a great driver and veteran like Alex Yoong comes out only midpack in A1, that means that there are some really good drivers out there with him.