I don't think the HoloLens or Magic Leap comparisons are more relevant as the FoV on those things is tiny. The Vision Pro is essentially a VR headset with advanced pass-through, as opposed to the AR devices you mention. So you are going to get an FoV comparable to current VR headsets (between 95-105 degrees, more if you're very lucky).
As you likely know, the AR headsets you mention overlay a small digital window onto your natural FoV, which is jarring when you look around and content gets cut-off when you look outside of that small window, as it's not clear where the augmented reality window begins or ends. This doesn't happen with a VR headset because everything within your FoV is digital. The trade off is have the black bars around your peripheral vision like you're looking through ski goggles.