I'm looking forward to watching this. Your analysis is always brilliant!
Your thumbnail is okay, but can be improved. The suggested version by YT is technically flawless but screams clickbait.
The photo of you was shot with a three-point lighting setup. That's excellent but your montage contradicts this; the dark-side of your face in the original thumbnail is juxtaposed to a super bright spot. Also the right side's colour in your version might be a tiny bit too vibrant.
I did not see the numbers at all. I only saw them after carefully examining the image, but I somehow felt it was busy.
Overall yours is still much better. I hope you can continue making these videos, @randahl