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Since it is a new computer, maybe some indexing is going on in the background of macOS? Try to check if there are any system-processes running in the background (and close all other applications running before running geekbench).

Seems likely you were right about the indexing. Rerun tonight shows some improvement: 5444 single core (vs. 4948 out-of-the-box) and 37067 multi-core (vs. 35482).
 
Good article idea: What’s the best car you can buy for the the cost of a loaded iMac Pro.

2013 Accord sport with leather, nice wheels, etc.

But I'm going to be spending money on my car. Folks who buy that computer are going to be earning money with it.
 
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