The first one definitely looks like Stratos, but the second one makes me question whether these are actually Stratos-related. The article you linked doesn't mention Stratos at all.
Your theory about Stratos being a precursor to SWGB makes sense though, I remember reading that ES basically had to teach the developers of SWGB how to develop for the engine. Maybe they made Stratos to show them how to use it?
[This message has been edited by anterior2 (edited 11-14-2015 @ 07:18 PM).]