You asked for a comparison, so I just told you what I know. I love my yanmar dealer here in wisconsin. He tells me the truth and doesn't play games.
It sounds like a great deal you'll be getting, just make sure you ask them if that is the bottom dollar. NO freight and setup and NO other special sales gimmick charges.
As far as the price difference; you got to make sure when you're shopping around you don't just shop around for tractor price. You need to shop around for the financing. For example, it makes a very big difference if you skip the dealer financing, trade in incentive programs, etc. Just cut to the chase and ask for the cash price, and don't let the dealer jerk you around.
The prices you were quoted have to be apples to apples. Was one cash price and the other 0% for 60 months or some other dealer finance program, or both cash price?
I hope that makes sense.
Good luck with whatever you decide!