Watched the new perfstack that will be launched in the new version. It looked awesome, but was missing one point that would make everyone using it more happier. If you want to check the same resource from two different entities. You need to open each entity and select the resource you want to monitor.
It would be better to be able to select multiple entities, and then drag the resource you want to monitor. These enitites would then be added to the same graph for the resource.
For example, if I have Node01 and Node02. I want to compare the CPU Average of these two nodes. I would then select both Node01 and Node02. Then I would find the CPU Average Resource and add it as an graph. It would then create one graph with Node01 and Node02s CPU Average in this graph.