your possible answers "truthiness":
1. Quite likely as the specs, per Kubota, are nut-on same...
2. nope, per specs, both units are run from tractor hydraulics...
Tough to discern the actual difference, when the only info from the company you can find are marketing gems like "dig harder, faster, longer with less effort" blah, blah, blah...Can't get any clarification from dealer(s) either. Price quote from dealer indicates an approximate $1000.00 difference. Ummm, wait, maybe I just answered my own question, eh?