Sylvester said:
No, just the thrust nozzles
The vector-thrust on an F/A-22 work because a) the airframe's unstable, and b) the plane's maneuverability is dependant on that combination of unstable airframe AND forward velocity to maneuver. This means that the plane can pull harder turns than before.
In space, that ship doesn't have to fight gravity to maneuver - and indeed, they use a combination of scoops and maneuvering jets, IIRC, to change direction most of the time, so a vectored-thrust main engine would do very little to help the ship. Furthermore, most capships aren't DESIGNED to maneuver hard like that - remember, we've got 40000+ tonnes of mass to move about, and that has its own inertia. Also, you've got that equipment and the people inside to worry about splattering all over the bulkheads; in the fighter, the pilot's strapped down pretty good, and the fighter itself doesn't weigh too much, so inertia isn't as big a deal. With that carrier, you've got crews running around fighting fires, working with the engines, manning guns, and so on. They're not all going to be strapped down, plus there's a lot of loose equipment to worry about (missiles, support gear for the fighters, coffee cups, etc). That also puts a lot of stress on the frame - the fighters of WC aren't meant to last thirty-plus years in service, but capital ships may well end up serving that duration, in order to get every credit invested into its construction.
We've only seen two capships ships in the WC Universe whose YPRs exceeded 5dps - and they were far smaller than your carrier, both being destroyers whose speed and maneuverability was very important to their survival and ability to accomplish their mission. Carriers are not expected to get close enough to an enemy capship to need that maneuverability - if the enemy's that close, you're dead anyways.