Here is the difference between Apple M2 ipad pro and ipad air
The M2 iPad Pro sports an 11" display, while the iPad Air sports a 10.9" display.
M2 ipad pro comes with 10 GPU cores and ipad air with 8 GPU cores.
M2 ipad pro has storage from 128GB to 2TB while ipad air from 64GB to 256GB.
Bluetooth v5.3 is supported in M2 iPad Pro and v5.0 in iPad Air.
Talking about battery backup, you get to see the same battery life in both.
Face ID feature is available in M2 ipad pro while this feature is not provided in ipad air.
Apart from this, the feature of stereo recording is available in M2 ipad pro while it is not in ipad air.