Very likely that it's a 32-core machine, but not 100% confirmed. However based on the number of results, I'm confused that they are all so similar. If "High Performance Mode" turns a 1GHz 32-core GPU into a 1.25GHz GPU, that should result in a clearly noticeable difference. I'm looking at what appears to be an 8% spread, however I would be expecting more like a 20-30% spread, assuming that if it is available, SOMEONE would have tried running in normal, and SOMEONE ELSE would have tried running in High Performance.
So I'm wondering if it is still all on Normal, not High Performance, which would provide a perfectly reasonable justification for the slightly lower than expected results that are leaking out. High Performance might not be in OS 12.0.1 yet.