Thanks for posting those test results, Darkdrium!
I would very much like to see another acceleration test, but this time only up to a speed of 400km/h - I think the contrast between the ships will be much more visible this way. Maybe you could ask Synchro Logistics® if they have results on that?
Right now, for example, Piranha and Icaras are almost equal in acceleration - I find that hard to believe. I think the initial kickstart (up to 300 or 400) is much stronger on Icaras, which means a lot seeing as you usually don't navigate tight chicanes (where accel counts most) at full speed.

Also, I would very much like to see a chart on the acceleration given to each craft by going over a speed pad. My guess is that crafts with higher accel can reach significantly higher speeds by going over a speed pad than crafts with low accel stats.