Sensitivity Airspy R1 compared to Airspy Mini #406mhz

Ben Z en de rest

I am running an SDR recorder with the Airspy R1, 10 MHz continuous recording, for the weathersonde band ( 400 - 406 MHz). I have an Airspy Mini attached to the same antenna for OpenWebRX on the same band.

Would there be a chance that the Airspy Mini is (a bit) more sensitive than the R1 or is the RF input part about the same ? 

Thanks for the info,