In a battle between Babylon 5 ships and Star Trek ships, the Babylon 5 ships would win because they have W.C. and Star Trek ships don’t. I base my theory on the fact that in all the Star Trek episodes I have see, they never use, refer or show a W.C. not even on the official blueprints.
"Please Captain, not in front of the Klingons." -- Spock, to Kirk, refusing a hug (Star Trek V)