For me AdMob performs slightly better than iAd. This is on an iPhone game that uses AdWhirl, so AdMob is actually getting the leftovers from iAd.

http://dl.dropbox.com/u/117000/hackernews/admob.png

http://dl.dropbox.com/u/117000/hackernews/iad.png

Holy crap, what is your secret?

I average 15K impressions a day on one of our games, and get maybe 30 clicks, and make around a buck.

You get ~2K impressions and close to 115 clicks and make ~$5-$10

If I could get your numbers I'd be making a killing.

This is interesting because I've got the reverse! My CTR on AdMob is far, far lower.