There are definitely differences in the models. So far I’ve used only Video Doorbell v2 and Battery Video Doorbell. I do like that Battery Video Doorbell shows more of my porch surface without requiring a wedge mount, but it does so at the expense of a pronounced fisheye effect, so I generally prefer the view from Video Doorbell v2 and may switch back to that on my front porch.
There’s an existing Wishlist request for that: