Hi @Alex_Cross,
Please take at look at the workflow inspector available for download after you login. Going through the examples given by courtesy of Mateus Cruz from UiPath may provide you an idea of how to examine the XAML file and count the activities.
I am using workflow inspector currently to build my own rules to supplement some of the missing feature in workflow analyzer. Hopefully, in the coming months workflow analyzer will be enhanced.
See also Need option to Export Workflow Analyzer Results, How to make a custom rules in Workflow Analyzer, Workflow Analyzer Rules