BigFix Patch Management works a little differently. The patching fixlets will use relevance language to determine if a specific patch is applicable to an endpoint or not. The relevance language checks things like file versions and registry key entries on the endpoint to determine applicability a defined by the Microsoft release bulletins. There is really not a determination of applicability by reading the list of installed updates (it is based on file and registry level values). If you take an action to patch via BigFix and it is successful you do have a record of installation date for those updates you updated via the fixlets.
You may want to try creating an analysis to retrieve this information from the endpoints:
And here: