No way Serenity could keep up with the Falcon or Enterprise! And yes the Falcon would be the fastest, not just because it did the Kessel run in 12 parsecs but because the physics in star wars are different. Even going from system to near by system in Star Trek takes hours. Star Wars is minutes.
Still one of my favorite (and most worn) Woot t-shirt!
This shirt needs a Tardis weaving about.