Okay, I'll admit that the various accents were maybe not my best idea ... if I were ever to rewrite this, I'd certainly tone them down. :)
As far as the combat, I can only talk about the ones I did myself (I dropped out just around the end of the Kessel arc, and Xenon took over as GM at that point). But, when there was a major battle, myself and some of the players would get together and run the battle on a game map, and I'd make notes of movement, and who shot who, and battle damage, and turn that into a narrative. Lots of work, but fun.
Which is also why, counter to the way things usually work, in the duel between Wells and Brand, Brand lost. Just the way the dice worked. Plus, it was just a one on one fight, and neither I nor Brand's player were pulling any punches.
So it was all down to die rolls, on some occasions. Heck, Torvic surviving two headshots, and swimming out of an icy river, were simply because his player managed to make some truly amazing die rolls. :D