The Xiaomi seems to overexpose by ½ or 1 stop.
I am no fan of the iPhone, but its exposure seems to be correct.
Of course, I wasn't there and I am not sure whether the scenes were really that bright.
There are some photos i liked more in Xiaomi and others in iPhone without a narrative.
Iphone has better colors/processing
iPhone wins, but if they weren't side by side, you'd never notice.
Both are okay for everyday use.