"There are known knowns and unknow......"
So is this your way of explaining that you have no bias?
ACDC are 10 years older so it's not quite fair. Plus ACDC had an record label injuction preventing a new album(later becoming Black Ice) from being released for 2-3 years. The numbers of albums from when band members were in their late 20's until age 50 would be a far more accurate comparison.
Does not matter. You were the one that set up the comparison, and I simply showed that it was inaccurate. Over the last 20 years, U2 have put out new material at nearly twice the rate of AC/DC.
Secondary market tickets for many ACDC shows were going for hundreds, even to get the worst seat. They could have done stadiums last year but the tour started in the fall. Were ACDC numbers through 2008-Feb 2009 better than 360's projected US numbers in 2009?
AC/DC have NEVER done a stadium tour of the United States. They clearly could not have done one last fall. The fact that it was done in the fall does not mean one cannot play stadiums. U2's 2nd leg of the Joshua Tree North American tour started in mid September and ended 5 days before Christmas, with multiple stadium shows being played in November and December in North America.
The first 8 shows of U2's North American 360 tour will outgross all 42 shows played by AC/DC in North America to this point.
ACDC will probably play more Canadian Stadiums on the 2008-09 tour than U2 will play on the 2009-10 tour.
AC/DC will have played 8 stadium shows by the time their tour finishes, just one more than U2 did on POPMART.
U2 are scheduled to play 3 stadium shows in Canada on their first North American Leg and will probably play another 3 stadium shows on the second Canadian Leg. But, U2 shows are played IN THE ROUND, using all the seats in the stadium unlike AC/DC. Although AC/DC is more competitive with U2 in the Canadian market, U2 will still finish ahead in total attendance and total gross in Canada.
ACDC don't sell $30 tickets.
Actually, AC/DC does have tickets as low as $37.50. In any event, the fact that U2 has $30 dollar tickets, makes it more difficult to achieve a higher gross. Yet, despite that, they will still be outgrossing AC/DC in nearly every single market around the world by a considerable margin.
U2 is doing a full stadium tour across the globe with every show in the round. AC/DC is doing arena's and some stadiums, but with no in the round seating, even for Arena's. Again, AC/DC are on Coldplay's level, not U2 when it comes to concert attendance and gross.