Good catch, 1.41:1 not 4:3, that’s on me. And for straight 16:9 content you’re right, close enough that the Ultra’s size wins. But most theatrical films run 2.39:1 scope, not 16:9, that’s actually closer to the 17 Pro / Pro Max’s own 2.17:1 shape than the Ultra’s 1.41:1. On those the Pro line only loses about 9% of screen to bars vs roughly 44% on the Ultra. So if you’re watching movies rather than YouTube or TV, the Pro’s screen is the better shape for it, the Ultra just has more real estate to spare.