The reporting api separates event parameters
If I publish an event with two or more event parameters there is no way to view them using the reporting api because it breaks everything down into counts based on a single parameter and it's values.
For example if record an event 'new_registration' and add a parameter for method and city. I can't view events by method and city I can only see them by one or the other.
This is possible in Flurry Explorer, by entering both params as dimensions.