Sorry Tarryk - well some of it has to do with volume.
Firefly plus Serenity equals 1 season of shows and 1 movie.
Babylon 5 is 5 seasons of shows plus a bunch of other (admitadely) TV movies also (admitadely) kinda crappy TV movies (haven't seen the new one straight to DVD)
hmm did I say their movies were only TV?
Serenity had the great thing that it showed here on the Marcus Threatre Ultrascreen )look it up) and that big screen never gets anything but movies that show on 5 other screens - till Serenity came around and it showed on the Ultrascreen singly that week, cause it didn't warrant 6 screens.
Still was history
Joss Whedon is a great storyteller, hands down!
But J Michael Straczinsczki (never get spelling right) is a master at writing great Sci Fi!
Buffy is not Sci Fi. Babylong 5 & Firefly/Serenity are Sci Fi, at least at heart.
I would say Babylon 5 is more pure Sci Fi, and Firefly/Serenity is Drama with a Sci Fi flavor.
Both are great , but Babylon 5 is more polished as a whole package.
Another point.
Babylon 5 was always going to be a 5 season series. I agree they did do the Excalibur spinoff after seasn 5, yes, but Babylon 5 was a complete story determined before the series was ever greenlighted.
Firefly not only I guess did not have a predestined duration, but it also only lasted 1 season.
No great offense, but B5 got it's job done! 5 seasons done!
Joss Whedon despite his creativity and power from Buffy could only get 1 season from his Sci Fi show.
Sci Fi says - J.M.S. - 1 Joss Whedon - 0
Buffy the Vampire impaler is fantasy
Babylon 5 is pure Sci Fi