the rEALLY funny bit isthat since i was in terran gauntlet, the super-tractors the enemy perseus packed would actually pull my ship into them, and so they would take damage because I had invuln on

I hit 4x mode, sat back and smiled while they pulled me into them repeatedly

On a different note, giving Perseus a 1000 afterburner causes AI to do very interesting strikes...they attack, run, and attack again and hte only time you can attack is when they are. one well placed missile does the trick.
Also, i noted that watching the engines of a 1000-ABing AI in front of me blast dead ahead away from me is like watching the Star Wars Lightspeed effect from the outside, when you see the Falcon jump away...give a capital ship such an AB and you're all set warp wise. 1000-2000 mps is my favorite speed for it.
sometime tonight im going to give AI a negative afterburner on their Ulysses and see just how they react =D