The short version: Xe delivers on its promises and then some. Whether the i7-1185G7 CPU as a whole is running at 28W TDP or 15W TDP, it beats all the other integrated graphics systems on both Time Spy and Night Raid by a healthy margin.
I'm sure your benchmark results are correct but it's worth noting that Anandtech came to a different conclusion when measuring the performance of actual games on the chips in question.
To paraphrase their results/conclusion: when playing actual games, AMD's chip is often faster by a small margin at lower resolutions, and often slower by a small margin at higher resolutions.
So it's absolutely not the slam-dunk that you would expect from Intel's slide deck or these two 3DMark results.