I dont think the SSD will be much faster than the Xbox. Microsoft did state that they built a brand new protocol for data transfer that is supposedly 4 to 5x faster than current protocols. That would put it at around the same speed as Sony's. I would say Technology wise the Xbox with its complex Hyper-V and containers for games is a monster that will edge out the PS5 in performance. I just dont think many will be able to tell the differences between the consoles while playing the games though. This leads me to think that the PS5 will edge out the Xbox if it is 100 dollars cheaper.