Better in the situations where you are lugging it around, forsight to change lenses etc. I was reminded of a photojournalist who took great shots with an early iPhone to North Korea https://www.npr.org/sections/pictureshow/2013/03/05/17349916... Fidelity doesn't matter that much.
Nearly 80% of the photos that I have taken since 2011 have been on my mirrorless camera that I've only had for nine months. The phone wins when it is all you have and there is something extraordinary to capture, but it has never compelled me to put effort into taking photos like the camera has.