The sum total for both side is 19.4.The result also seems to be the same for all hcp ranges(20-20, 19-21, 18-22, 17-23, 16-24).
This starts to deviate from the law by .6 trick. So it is not that good news for having 10 trumps.
The result for 21 hcp is 10 tricks against a 19 hcp opponent getting 9.4 tricks. Again high card points especially A and K are more important here.