Hello and Thank you HN!
Comparing the speed of similar ships seems to be an interesting exercise - was QE2 always subject to the same questions?
Although, surely, unless you have totally identical ships with identical loads, sailing in the same space, same weather and sea conditions, same fuel load etc, with radio contact between Bridge and ECR etc of each, there wouldn't be any way the comparison could be true, would there? (Bit like FI - really requires same car for everyone)