Cargun, in your comparison to car testing I have a couple of thoughts. First, even though the mpg testing might be standardized, the only thing that has been standard about it (in my experience) is that I never had any vehicle perform as well as the numbers provided. The point is not even to question the standard or how they do the test. The point is, when that test doesn't coincide with practical experience then the value of the test is decreased and relegated, as our mpg numbers are, to marketing hype.
Second, as far as hp in autos. Where are they testing this? At the flywheel? I hope not, because flywheel horsepower has little or nothing to do with actual performance.
I don't mention these two things to quibble. I'm simply pointing out that if the testing doesn't impact practical use or experience, or that is heavily enfluenced by lobbying entities such as the manufacturers, then many will see such tests as an uneven playing field. Kubota may feel this way.
But I think the real issue is the 40 hp limit. I'd be curious to know 1) what percentage of Kubotas models have more than 40hp at the PTO? and 2) what percentage of their market share is composed of those tractors?
Around here, on real farms, JD and NH are the rule, but you do see some Kubotas. But the local JD dealer tells me most of his sales are in CUTS and lawnmowers. Do you think Kubota is trying to tap into an Ag market that already seems kind of stagnant? Maybe so. If so, they may need to submit to Neb testing to obtain legitimacy.