Keep in mind this statement comes from a former Microsoft employee....Try Microsoft's technologies to test non-Microsoft interfaces and see what you come up with? As much as Microsoft would like to see an all Microsoft monolithic universe this is not reality.
The licensing models are very different. The deployment models are very different. There are substantial differences in the monitoring and analysis departments. Microsoft's solutiuon set is focused on developers. HP's on Performance testers/engineers. This dictates a very different focus for the tools