I think he meant diag screen size? The 11/12/13 are 6.1" while maxs are 6.7"
13: 71.5 x 146.7 x 7.65 13 Mini: 64.2 x 131.5 x 7.65 3rd gen SE: 67.3 x 138.4 x 7.3 1st gen SE: 58.6 x 123.8 x 7.6
I strongly prefer the 1st gen SE because it's significantly easier for me to use with one hand, it's got a completely flat back (no camera bulge), and it's got a headphone jack and home button.