Neu 1509/1D fat motor wires

I just received my 1509 in the mail today and when I first looked at it, I notice the motor wires are HUGE. You can see it here: http://maxcapacitor.oplink.net/blunten/15091515.jpg . Do all 1509's come with that big of a wire? They look like 10 gauge wires and my 1515 2y has 14 gauge wires. My only guess is its a high kv motor (6900) and it draws alot of amps. If anyone has an answer to this, let me know. Also, the shaft has very little resistance when you turn it with your fingers compare to my 1515 2y. You can barely feel the dimples while its turning.