The reason I ask is because warped records can make a turntable seem like one has more torque than the other. When you have a warped record it is bowl shaped. You might not be able to see it but it is slightly convex. This makes the record slippery on one side and have more grip on the other side. If you were to have a warped record on one turntable and a record that is perfectly flat on the other turntable, one would seem like it has more torque that the other.
As for your turntable running @ 139.80 on a 140 bpm track. I'm not sure. It could be something to do with your ultra pitch. Your TT's have ultra pitch dont they? I