I feel like I can see increased efforts at differentiation on the 13 Pro compared to the 12 Pro.
The iPhone 12 Pro was perhaps the least differentiated high-end model Apple has ever put out.
I think the 13 Pro has a few features that make it a bit more of a compelling buy:
- The new telephoto lens is a massive improvement (I wonder if your last experience was with the 12 or older? The new camera is actually worth something while the old one had mediocre quality compared to the main lens).
- ProMotion has no tangible benefit, but it makes every interaction with the screen look smoother. When you go back to old phones that don't have it, it's jarring. I can see why some of the Android-using tech enthusiasts have criticized Apple for not delivering high refresh rate for so long.
- The previous iPhone 12 had identical main/wide cameras with the Pro model unless you got the Max variant, which is no longer the case. The iPhone 13 Pro has different/better cameras all around over the 13.
- The GPU of the 13 Pro has an extra core over the 13, which was not the case for the iPhone 12 lineup. Anyone who does mobile gaming on graphically intense games should probably choose the Pro model over the regular one.
- Significantly better battery life over the non-Pro version, which was not the case for the 12 models, which had identical ratings.