apparently not
one person can make a difference. a huge difference. maybe not a person with terrible gear, which is what I assume you have though.
MAYBE its your server. but its probably you. I refuse to believe there is a server out there where empire wins 90% of the time. statistically that is just a impossible number. republic on my server dominate but solo queue I'd still put us around 60% as a faction, at best.
actually come to think of it, one person can make a really bad difference as well, by not calling when they're defending, by aoeing cc'd people while people are capping, etc