SWQL query with date > comparison always execute as if >=

I have the following query

SELECT  EventID, EventTime, Message, NetObjectID, NetObjectType, NetworkNode FROM Orion.Events WHERE  Acknowledged=0 AND EventTime > '07/05/2015 15:28:49' ORDER BY EventTime DESC

which for some reason, will always return the results as if I were performing the query with

SELECT  EventID, EventTime, Message, NetObjectID, NetObjectType, NetworkNode FROM Orion.Events WHERE  Acknowledged=0 AND EventTime >= '07/05/2015 15:28:49' ORDER BY EventTime DESC

Is this a bug or am I doing something wrong here?