Well, I may not know what the USS Titan is, but while were one the topic of Ship Classes, lets take a look at the imagination of B&B when it came to Star Fleet Battle Group Omega
USS Intrepid NCC-74600 (Intrepid Class obviously)
USS Valiant NCC-75418 (Defiant/Valiant Class)
USS Galaxy NCC-70637 (Galaxy Class of course)
USS Aires NCC-45167 (wow, not a class name, no idea what this one is, hull number suggests possible Ambassador Class, a USS Aires was used in the NON CANON game Star Trek The Next Generation: A Final Unity, as an Ambassador)
USS Nova NCC-73515 (Nova Class duh!)
USS Hood NCC-42236 (The Hood was established in the episode Encounter at Farpoint as an Excelsior Class Starship, which would be consistant with its registry number, also the registry number shows that the ship was not destroyed in the Dominion War so therefore is still an Excelsior)
USS Archer NCC-44278 (No idea what this one is, there has never been any metion of a USS Archer before, see explanation for Enterprise, registry number suggests either an Excelsior or an Ambassador, but could also be a Miranda or any other type of ship that was built between ST VI and Encounter at Farpoint)
Not alot of firepower there, good thing the big E didnt make it, as that Battle Group Omega would have been torn to shreads, the Nova, Intrepid (i hate to admit that one), and the Valiant would have been blown away in one salvo. Although if the Archer and Aires were Ambassadors, between them, the Excelsior and the Galaxy, I think the E might have been able to do some real damage to the Scimitar, and prolly would have destroyed it had the Valdores crossed the Nuetral Zone.
Another note on registry numbers. NCC-1701 is a Constitution class Starship. NCC-2000 is an Excelsior class starship that was built approximetely 30 years later. Starfleet only built 300 ships between the Constitution and Excelsior Class Ships? Then the Galaxy is NCC-70637 so Starfleet built 68000 ships in the 100 years between the Excelsior and the Galaxy? Or did Starfleet require ALL Federation vessels to have a registry logged with Starfleet after Kirk and Co.?