Thanks Gentlemen for trying to explane this to a non-techno person but, I don't think you are understanding me correctly.
ALL the V1, VR and V2 speeds are spot on the same between the two companies data for the weights from 800,000 lbs down to aprox 520,000lbs and below (depending on temp). Then down to 400,000 lbs this gets into the shaded area of the tab data chart where the note states, "shaded area indicates performance affected by minimum control speed." In the shaded area is where the speeds don't match. I can understand what you are telling me with two different people trying to split hairs the the speeds varing a knot either way, but I would think that would be consistent through-out the chart, not just at the lower weights where VMCG may be a factor. Am I explaining myself correctly?
Thanks,
Classic