i'm sure that if you include ALL the variables that the 1/4 mile and dyno have respectively then thy probably will both give you the similar power figures by calculations
and each has their own variables, like:
drag:
driver, gearbox, drivetrain, weather, distance above sea level, surface, weight, weight distribuition, power curve, torque, tyres, etc. etc.
dyno (wheel):
gearbox, drivetrain, weather, tyre pressure, calibration of machine, dyno operator etc.
dyno (engine):
weather conditions, calibration of machine, many more?
the point that i see is that for measuring ENGINE POWER then what could be better than an engine dyno? it CLEARLY has the least amount of variables compared to that of the drag strip and that makes any results the easiest to accurately obtain and thus the most convincing in my eyes.
and before anyone says, yes all the above variables i wrote aren't the only variables i just couldn't think of any more as i'm suppost to be writing a thesis and that's on my mind...
cheers,
Warren.