I can only guess the reason being over saturation, or the fear thereof, is keeping them from these and other markets.
Had they not hit these cities with JT30 last year it's hard to imagine these locations skipped this time around.
Then again, they did skip the entire SE for the 2015 run.
I'm not sure why they didnt tour Europe first for this tour.
U2 only played a paltry 12 gigs in Europe last year compared to about 30 in the US .
There is more demand in Europe for gigs ,they should have played Europe first ,then gone back to the US in the Fall when demand would have picked up .