The trade-off for the flagship phone in case of iPhone is battery life - it is noticeably shorter.
Definitely phones have had problems with reception depending on how they're held, as Apple pointed out at the time. There's little doubt the iPhone problem was worse, however. Discussion: http://gizmodo.com/5589336/apple-antennagate-and-why-its-tim...
I have no idea which iPhone had "consistently failing power buttons" but I have little doubt you can find other phones which have had problems with physical buttons.
Bendgate: https://www.forbes.com/sites/ewanspence/2015/04/04/bendgate-...
Yes. http://www.phonearena.com/news/HTC-responds-youre-holding-it...
> consistently failing power buttons
Define consistently? This is a complaint I haven't heard of, and having had four separate iPhones generations for both myself and my wife I've never had a button fail. https://www.google.com/search?q=htc+power+button+failure https://www.google.com/search?q=lg+power+button+failure
> or that bending issue?
Yep. https://www.cnet.com/news/oh-no-samsungs-new-phone-bends-jus...
jimmaswell: are you joking? http://www.samsung.com/us/note7recall/
Edit: Apparently I should've refreshed first.