the point I am trying to make is we need to look at the power/torque through the whole rpm range where we are in gear accelerating.
I bet the gundam has got over 1000 hp and over 900 lbft for the entire rev range that its accelerating in hence achieving such a massive speed, its easier to achieve a large sustained torque/power curve with more displacement.
as an example I have a plot of me and rod only 30 hp difference peak figures but torque is a lot less at high rpm, but my curve is longer and torque is sustained higher and im using less rpms.
rods plot
my plot
im not trying to making a car specific comparison in anyway ive got almost twice rods displacement, what im trying to get at is we have very similar topline hp figures, but through the entire rpm range of acceleration I have a lot more torque everywhere and my engine is almost stock on pump fuel, imagine gundam on race fuel with a fully worked head and race cams.
at max rpm about to shift ive got 620lbft, rod is down to 460 lbft now surely that has to have an impact on acceleration ?
for the last 2000 rpm im 710-620 lbft, rod is 615-460 lbft