Have you used the reports that TestManager generates once you complete your performance test? I would combine those reports and additional reports taken from perfmon.
Regarding the license issue it sounds like TM can not see the additional licenses you have. I would call support and have them walk you through it. A script to demand peak performance is based on the number of VU's and percentage spikes from your server, right? Example, perfmon throws back that you are well below your threshhold of 70% so you now have a good idea what your demand peak/VU should be.
Seems that you don't have the additional VU license for running your test. With each license of Rational TeamTest, you get only 1 VU license. To run the suite for more than 1 user, you need to have additional VU license e.g. 50 VU, 100 VU.
A highly advanced bug is indistinguishable from a feature.