Keep in mind also there are TWO sources of location information available.
The info that is pulled from the FCC database and...
Location data that can be (but not always is) entered by a DB admin. (via user submissions, their own research, etc.)
The location info stored with the FCC license can be quite erroneous in some cases, so if there is "RR Locations" data available I might trust it a little more. Since someone actually went to the trouble of inputing the data there is a chance it is more accurate.
Also in my case, (and surely several others as well) the new statewide 700Mhz radio system being built here is being built under the FCC's statewide licensing system for 700Mhz so no data on tower locations will be stored under the operating license. In cases like this, location information is only found within the antenna structure registration (ASR) database for each tower (or microwave license if applicable) and that info will only be available if it has been manually entered into the RR DB by an admin.
Having said all that I would encourage everyone that can provide accurate "real world" location data to please do so.