This is mentioned in the article:

The critical thing to remember during all these benchmarks is that Qualcomm matches or beats the competition (as of today) at all these CPU and GPU tests, but at less power than the others, sometimes up to 70% less power than Apple or Intel.

Even against the M2 Max from Apple, which will beat the Snapdragon X Elite on most benchmarks (except single-thread), the Snapdragon X Elite still consumes 30% less power when matching Apple's single-threaded peak performance.

Looks like a 30% efficiency improvement, although the article doesn't detail the performance against M2 besides in writing. We'll have to wait for more benchmarks.

On the more familiar and widely used Geekbench 6, both configurations easily beat Razer’s Blade 14 (2023) powered by the AMD R9 7940HS. The MacBook Pro 13” with M2 processor came last (compared to our best gaming laptops) with 2,658 single-thread and 10,088 multi-thread. By comparison, Qualcomm pulled off 2,940 ST, 15,130 MT, 2,780 ST, and 14,000 MT at its lower TDP configuration.

Cinebench 2024, which replaces Cinebench R23, hasn’t been used a lot by us yet as it’s brand new, but the new version, which is compiled to run ARM natively, still shows the Snapdragon X Elite way ahead of the competition with 132 ST and 1,220 MT for Config A. The MacBook Pro with M2 could only muster 121 ST and 572 MT and was still easily beaten by the Config B model with 122 ST and 950 MT.