Other differences to consider:
L3130 has independent pto
CK30 has live, clutch controlled pto
L3130 has separate steering hydraulics, and total flow might have been higher as well.
CK30 has steering/implement hydraulics integrated
Both have the rocker pedal, but I think only the Kubota has the nifty lever cruise control (I don't recall how the Kioti was engaged).
I think the Kubota also might have about 2 more pto hp. (NOPE: Should done this before posting, but I just checked and it is the gear 3130 that has two more horses. The HST model has 24 versus 23.5 for the CK30, so there's not much difference.)
Kioti financing was a little bit cheaper if you went longer than 2 years.
Price differentials I was quoted locally was $18,125 vs $15,500, with the FEL (723 on Kubota) and ag tires. I do not know how much of the difference might be recoverable at resale if I chose to do so.
When I shopped, I liked both dealers, but if I had to do it over again I would probably buy the Kioti CK25 (at $14, 250 with loader, r1) and use the difference for implements, even though the Kubota seemed to run and operate much more smoothly and quietly than all the other brands.
I drove the Kubota last of a dozen or so I tried out, and really loved it, but I have since determined that the Kubota dealer is used to dealing with people with deeper pockets than I have. His costs for generic no-name implements and service are much higher than the Kioti dealer and he seems less interested in helping out a tractor newbie.
The Koti was the first tractor I drove, so maybe my purchase would have been different if I shopped there last. I don't know.