This list is a huge flop. I dont know what happened, but most of this list is BULL****. Katy didnt even have 35 shows in 2015. Neither did 1D have 33 dates!
Taylor had 20 dates, but according to their North American ranking, Taylor did 35.6M, so that leaves 10.9 outside of North America in 10 dates. I know Pollstar said Taylor did $775K in Netherlands and $1.8M in her 2 Germany dates. That would leave us with $8.33M in the 8 remaining dates, which includes 2 stadiums in Japan and Hyde Park with 65K people. Yet the average between those 3 stadium capacity shows and 5 sold-out arena dates in UK / Ireland which are Taylor's biggest markets in Europe would leave an average of just $1M