According to VoodooDE VR the FOV of the BSB is quite significantly bigger than the Quest 2 and Aero, but as he is saying: It's different with every head-shape. Another guy only measured 102°/96° h/vFOV with the Crystal, but the claim of MRTV that it's lower than the Pico 4 doesn't make sense.
Compare to my 8KX even with so called "small" FOV switching to my Pico 4 is like looking through toiletpaper-rolls and the clarity with OpenXR Composite (only) is higher than what my RTX 4080 can handle (FSR mandatory) because of the wide FOV and display-ratio. I guess those 1:1 ratio displays of today are just more in sync with the current GPU-gen and maximum clarity has to come with a lower hFOV at this time, probably also because of DP-limits of current RTX-cards. The "through the lenses" videos made with the 8KX and 20xx series cards and SteamVR only are BS compare to what I get maxed out and the Crystal or BSB is not an option for me.
Does anybody know if it's possible to access the desktop in OpenXR composite mode similar to SteamVR?