Originally posted by: FoBoT
the Borg Cube wins every time
you will be assimulated
http://www.mrpoesmorgue.com/usvsd/borgs/nuborg.html
The Borg's main defense is their ability to adapt to the frequency of Star Trek weapons, rendering them useless after a few shots. The Federation has found ways around this by employing frequency modulating phasers, which slows the Borg down until they adapt to all the frequencies the weapon uses. Star Wars weapons aren't frequency dependant, and wouldn't be subject the Borg's special ability.
However, the Borg's ability to adapt to even Trek weapons doesn't mean that they can adapt to weapons of all power levels, but this claim has been made by diehard VS Trekkies anyway. The limits to Borg adaptability is proven in several instances, starting with TNG's "Descent, Part 2", where a Borg ship is taken out by a phaser induced solar flare.
Since stars have been around far longer than the Borg have, it doesn't stretch credulity to assume that they've certainly encountered a sun before "Descent, Part 2". In their entire existence, they've never managed to adapt to a sun's power, therefore, that kind of power level is too much for the Borg to handle. A typical Star Wars turbolaser is thousands of times more powerful than any solar flare.
We have also seen Borg Cubes blasted to pieces by Species 8472 weapons, which were so powerful they overwhelmed the Borg's ability to adapt to them.
After losing 400 cubes, they still had no defense and no apparent adaptation to the raw power from 8472 weaponry..
And in Star Trek: First Contact after a sustained bombardment of Federation weaponry that the Borg have previously been shown to adapt to, that particular Borg's cube's energy grid was fluctuating from the damage it was receiving. This proves beyond a shadow of a doubt that any weapons power that is more powerful than the Borg's ability to adapt to it can destroy a Borg Cude.