Aggregating performance data from multiple sites

I am running VCOPS enterprise 5.7.1 Enterprise on vSphere 5.1.  I have one vCenter with multiple datacenters representing different geographical locations. In each location I have multiple ESXi clusters.  Spread across these different clusters and sites I have 25 oracle databases on 25 VMs.  I want to look at all the data just for these 25 VMs and calculate their average performance characteristics.  Can I do this in VCOPs WITHOUT the custom UI?  Should I use a supermetric?  What is the best method for this?

Thanks!