Get-PWStatistics LAST_UPDATED vs LastUpdated

When viewing a datasource's statistics in ProjectWise Administrator there are 2 dates shown. One is the date/time the database statistics were last updated, the other the date the projectwise statistics were last updated.

If I do a Get-PWStatistics there are 2 stats returned, LAST_UPDATED and LastUpdated

LAST_UPDATED is an integer that works out to be the number of seconds since 1/1/1970. LastUpdated is a date/time. At first I thought one of these was the database statistics and the other projectwise statistics update times but that doesn't seem to be the case.

(Get-Date -Date "1/1/1970 00:00:00").AddSeconds((Get-PWStatistics).LAST_UPDATED) returns the same date/time as LastUpdated (just in UTC time instead of the server time zone)

So my question is - am I correct that LastUpdated is just the date/time representation of LAST_UPDATED (adjusted for local time)?

And if I am correct - is there a way to retrieve the Database Statistics Update date/time? If not, can it be added?