Hmm, is that the Apple Store app you took that from? If so, Apple apparently has a discrepancy, because this is what Apple's website has:
View attachment 1840984
Compare features and technical specifications for iPhone 15 Pro, iPhone 15 Pro Max, iPhone 15, iPhone 15 Plus, iPhone SE, and many more.
www.apple.com
One spec that surprised me no matter which one of these is correct is that the 13 Mini shows a longer video streaming time than the 12PM. Wonder how that can be? Of course your 13 Mini has a smaller screen on its side (obviously requires less power) to help mediate the smaller battery.