</font><font color="blue" class="small">( It should have a heavier frame as it is a heavier tractor. Is it needed on it? Must be other wise they wouldn't have made it so heavy too! Lighter is nimble! )</font> The Kioti is heavier because it not only has an iron frame, it has steel hood and fenders where the Kubota has used more plastics for fenders, etc. A heavier tractor is better for pulling than a lighter one, but yes, lighter is more nimble, but that's not necessarily good when you need to use your horsepower for pulling. Then you WANT a heavier tractor. The CK20HST is quite nimble at 1993 pounds, plus the loader etc. Great pulling power for only 21HP. John