I would like you to find one show U2 played in the U.S. in 2009 that was in front of a half-empty stadium. You won't because there wasnt any. Your friend is full of crap. Sorry to say. GO ahead look at every video on youtube of all their shows but I'm telling you wont find any. Besides how can they when the average attendance for the U.S. leg in 09 was 65,000 per show. Again your BJ fans are full of false hope just like their 35 million tickets fantasy.
I agree with you, Stadiums in USA were almost full, but in the Europe weren t ( Moscow, Turkey, Norman, Greece). By the way, Jovi tickets in the same stadium in Athens are selling much better then for u2, stadium will be full like Madona's couple years back. Friend told me and he work for the Greece concert promoter.
Bon Jovi fans didnt come out with 35. mil, mtv, vh1, live nation did!