Numbers:
SW:somewhere around 500 probably in warships
ST: Thousands, possibly in the millions if every race was involved.
Size:
SW: yes, they have n entire galaxy, but they have inferior technology and much less ships
ST:Probably most of the galaxy, Huge tech bonus and ship numbers
Ground Battles:
SW:...lasers?that go like, 5MPH?just step out the friggin way!and they use plastic armour that really slows you down.plus, they need to be deployed by a landinng vehicle.
ST:They have phasers, that fire as fast as bullets.they dont bother with armour, therefore would have a speed bonus.They can recieve reinforcements in an instant, as they can be beamed in and out in 2 seconds.Plus, ST has the Borg, Changlings, Klingon, Dominion, Cardassians.
Force:
SW: about there only advantage.
ST: Borg would quikly figure out the kinks and encorporate it into their army.
(This can be done, in JK2:JO the Sith lord, Desann uses the valley of the jedi and harnesses the force and then litteraly pumps it into his soldiers.)
Q
SW: would get owned by Q
ST: Has Q, completely own SW if he could be bothered.
weigh all those together and you get a definate Star Trek win.