I think there's a Titan and a Titan Red. I have read on here someone say that Titan Red was a commercial variety from the Ukraine.
I looked it up again, and here is the post:
http://tomatoville.com/showpost.php?...&postcount=137
Tatiana has one entry for a "Titan" :
http://tatianastomatobase.com/wiki/Titan
That's not the Titan Red I am growing, though. Maybe there are several tomatoes called Titan.