For me pricing is most important.
All 3 phones are great no doubt but value isn't the same.
Therefore iPhone goes away and my choice would be U11.The reason is just to try something new because I have used couple of Xperia devices allready and HTC really improved in camera department.This doesn't mean i would by any of these phones, currently using G4 and Im not satisifed.
iPhone 7/Plus: I am sure that Apple can improve the post processing by releasing an update. It needs to be 15% sharper with 20% less noise reduction and we'll be able to see the grass and such much better. There are a lot of jagged edges all over..
"We hope this camera comparison would be helpful even as it is."
No sorry it isn't, no camera related article is nearly half complete without low light shots. Spend more time with U11 and add the low light section when you guys can.
XZP shouldn't even be here in that case, this should have been between iP7 (just because you need some variety), U11, Pixel and something like a G6/S8. Make a OnePlus 5 vs XZP vs some Redmi phone comparison, that'd be more Apple to Apple comparison.