My colour blindness is relatively mild, but I struggled with many of the charts. I'd suggest putting the labels on the actual lines, either in the chart area or one side or other next to the line termination.

It sounds trivial, but with 20+ charts that I had to stick my face up to the screen for, I gave up after about 5.

Regarding "Due to SPEC rules governing test repeatability (which cannot be guaranteed in virtualized, multi-tenant cloud environments), the results below should be taken as estimates.". I'd like to have seen some attempt to migate this with, say, some kind of averaging of x tests over different instances. Although, I understand this would have extended an already long test process.