Cardboard Connections has a pretty good guide:
http://www.cardboardconnection.com/2014-topps-strata-football-variations
I could be wrong but I thought that the crazyness of the variations in Strata were that there was one version for Retail and one for Hobby, neither one had both photo variations. NEVER MIND I noticed the variations are Short Print versions versus the regular base version. Another of the zillion reasons to hate what the card makers are doing in modern times. And people talk about the "Junk Wax" era as if it were a bad thing.
I collect: Baseball, Football, Hockey, Mostly Vintage pre1980, My Homie teams - Washington/Baltimore Teams Senators (Twins, Rangers), Expos/Nationals, Redskins, Capitals, Bullets/Wizards - HOFers - Non-sport (mostly TV shows and movies).
My Trade List is very much a work in progress
CaptKirk42s Trading Card Blog Curly W Cards Strive For '65 YouTube klandersen42