Okay, here's what i think, and it's as close as anything you'll hear to any sort of answer. The answer is, they're equal. Ultimately we're looking at two different cultures. Both based on predominately humans, with a mix of aliens thrown in. We don't know how far along they are in their comparitive timnelines, so it may well be that one is more advanced than the other because they've been around for longer. Assuming these two cultures ever met, there is not guaruntee that they would go to war, especially later on in the SW timeline when the Empire is all but gone. If they were to go to war we would face a prospective stalemate. Each side follows the basic principals of science and logic. Thus weapon would be met with new shield, and new shield with new weapon. This is effectively the same as in any war. The tank was invented, the anti-tank gun was developed to counter it. We end up in a circle of retribution and scientific advance. I would propose that a ST vs SW war would ultimately come down to one factor, and one factor only. How far the people of the culture are prepared to go to win. However, much like the situation in the middle east we would most probably discover that both sides were equally comitted to their ideals and so on. Now i realise i've contradicted myself in talking about ideals, because the Empire would likely be the only people to fight against the ST guys, however, i was merely seeking to point out that the Suncrusher and more advanced weapons came later. It appears to me that we would only see a winner if one side were to realise the futility of the struggle. Star Fleets mandate is to explore and chart, not to provoke. The New Republic would welcome Star Fleet. What we should really be asking is what would happen after that. The might of the New Republic, Chiss, Star Fleet and all the other goodies, including the Jedi, against all the baddies. The Empire, Yuuzhan Vong, the guys from Bakura, the Borg etc. A fusion of all these technologies would create unimaginable technologies. The war would be waged across galaxies, (note the use of the plural). Ultimately, it would make a damn good film or game. Here endeth the lesson.