Caddx/Walksnail Avatar HD Goggles vs Betafpv P1 and V04: Which is Better?

I dont think anyone has done a dirrect side by side test but i belive walksnail has the possibility of acheving longer range with the goggles l with the right drone antenna setup as the goggles have a built in patch (not the best patch). but with goggles x people have acheved over 20km and goggles l will do comprably in a clean rf environment and video quality on walksnail is better than "cheap digital systems".