Are your regions in separate workspaces? Are you using tags extensively to define what you want to report on? If you have tags properly setup, you can RCE for your reporting requirements - especially if you use workspaces/lead partitions - RCE ignores workspaces/lead partitions and reports on a single set of master data. If you don't have RCA/RCE, you probably won't be able to get the "roll-up" reports you're looking for from the basic reports with the main Marketo environment.
Are your regions in separate workspaces? - no
Are you using tags extensively to define what you want to report on? - does the tag needs to specify region ?
We are implementing RCE.
So by regional team cloning global campaigns you are saying the global campaigns get the numbers bumped up due to regional clone ?
If that is the case what will be the best practice- please advice
Here are the tags that we use - many of them are required each time a new program is setup:
When using RCE, these tag values are avaiable as "dimensions". Using a combination of these tags, program statuses, channels and other standard attributes (like "country"), we can define precise reports according to our requirements. Even though our Marketo instance consists of 23 workspaces/partitions and over 800 programs, we can run reports that span multiple workspaces, countries, campaigns, programs, channels, etc. Here's an example report on campaign responses:
The most useful reports for us in RCE is the Program Membership Analysis report.