I would be interested in understanding why?
I recently ordered a new iPad Air 4, but cancelled the order a few days later, before it had shipped, after I looked more closely at the 11" iPad Pro.
I was originally going to purchase the iPad Air 4 / 256 GB / Wi-Fi, because the 64 GB would be insufficient for my needs - price for that configuration is $749.
Then I realized that the price for the 11" iPad Pro / 128 GB / Wi-Fi is $799. The 128 GB is very sufficient for my needs (and is not offered for the Air).
The iPad Pro has considerably better camera and speakers. The camera includes a flash, which the Air does not have. The display specs are better than the Air (ProMotion). I like that it has Face ID. I don't know if the Lidar scanner will be of use for my purposes, but it will be something to try.
Considering all of this, for me the iPad Pro 11" seems to be the best choice.