There is no "science performance", so the joke doesn't work that way - which is reason enough for Tom to ignore dull facts.
And if all ships are built for combat performance, we certainly can't deduce from this that the Voyager would be primarily a combatant! Her two known specialties, apart from the obligatory fanatical devotion to the Pope, are her agility and her high stable cruising speed - or at least those are the two things the heroes themselves bring up several times, while the rest (such as landing and takeoff capacity) goes unmentioned. Might be she's primarily a courier, then?
...I mean, that's the job her one known sister ship is seen doing in DS9!
Timo Saloniemi