Similar size and hp, the Kub has a continuous live PTO and the Deere has an independant PTO,
Kub - 1/4" valve, JD - position control, Kub - single pump, JD - dual pump, and the JD has slightly more 3 pt hitch lift capacity and is a little over 100# heavier. The Kub does have a longer wheelbase and a little more ground clearance. Both Deere and Kub make very good machines (obviously I am partial to green

) and I think the biggest differences between the two in usability for you will be the 3 pt hitch controls (position vs 1/4) and the PTO (indp vs live)
Just my :2cents: