In one of their regular live streams MSI Netherlands talks about binning Comet Lake-S processors and ties some conclusions to that. I say this with a bit of skepticism as MSI has been provided the processor samples by Intel, and that emasn these are QS and ES samples, likely not the final retail stepping. 

The video is obviously designed to promote MSI motherboards and to create a bit of a viral to get some cheap marketing fired at them. But they tested three Core series based on the batch received from Intel, so again that means ES/QS samples.

With the data they have compiled they have binned the processors towards 3 levels (tiers), Level A, B, and C with A being best and C the worst. Btw I might have missed it, but I didn't hear them saying how many samples they've actually tested.

• 2% qualifies as Level A of the Core i5-10600K(F) processors clock higher than Intel’s specifications
• 52% qualifies to Level B) of samples operating withing the specs. 
• And 32% of the samples were considered lower quality (Level C). 

The Core i7 SKU offers similar quality across the batch tested by MSI. They do mention that  Core i9-10900(K/F)processor seem to be of better quality, for overclocking that is as here up to 27% of the samples tested by MSI offering good overclocking headroom.

Here's a chart confirming what I have been saying for a  while now, Comet lake will have a PL2 TDP state where it is allowed to burst to almost 250 Watts for 56 seconds, the findings here match that thesis as at voltages up-to ~1.30v you can see the chart listing 275 Watt in that tweaked state.

MSI tries some Intel Comet Lake-S processors binning and tweaking