All I know is that they're the 2 best 650 Dual Sports on the market according to guys I rode with. Maybe go read reviews and shootouts between the 2? See if there are any big differences. The prices seem pretty reasonable, I think the Honda might be the better deal.
Cursory google browse on Thumper forums:
Honda > Kawi for Off-road use
Kawi > Honda for the road
Both suck in stock condition, both are solid platforms. Honda is taller.
This seems like a good thread: http://www.google.ca/url?sa=t&rct=j&...ksQmi31hC2KLBQ