It’s not the same thing. The ROG Ally X is an AMD Z1 Extreme and the Xbox Ally X is an AMD Z2 Extreme. It’s not clear yet how well the Z2 Extreme performs in comparison to the Z1 Extreme.

The Phawx did some testing with the Legion Go 2 and their Z2 (non-extreme) performs worse than the ROG Ally X. -> www.youtube.com/watch?v=gVdOkbJ9Npo&pp=ygUVTGVnaW…

My cautious expectation is that it will perform marginally better than the ROG Ally X, maybe be 10-15%, though I’m not touching anything Microsoft at this time in history.