What a stupid article. 355H is entry level with only 4P cores and no E cores, and 4LP-E cores. E-cores of which the 358H has 8, are very powerful, with the same or better IPC than Raptor Cove P cores. So the 355H will literally have at best 40% of the performance as the 358H as the LP-E cores are useless for real workloads.
The only quasi-sensible comparison would be maybe against 336H.
Panther Lake-H has proven itself to be quite impressive thus far, but the lesser Panther Lake-U series loses a lot of what makes the architecture unique from predecessors.