What was the lowest core average?
What's really interesting is to pull the core temps out into graphs on the desktop. Then also pull the core clocks and thread utilization. Now play the game a few minutes and go look at those graphs, comparing each core's temperatures to it's utilization and clocks as it boosts.
You'll quickly get a picture of which cores the scheduler prefers. But, if the game is a sufficiently thread- heavy load, you'll also get an idea of how it shifts the processing among cores as they heat up. That's why it's not really true to say more cores can't help even with gaming. More cores means the work can be spread around better to limit heating and keep them boosting higher, longer.
When doing analysis like this, be sure to set up HWINfo right:
How to use HWINFO to track sensors in HWINFO
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