Trippy. I woudln't have thought fireballs would do enough if they were indeed equipped with The Rising Sun amulets.
Yeah, I wondered about that, but I really haven't had any major trouble with them. I've killed bots in the funs?d series, the g?g-tom series, and several others. Occasionally they survive long enough to heal and move on from the waypoint to Eldrich and/or Shenk, but I don't think any of them has been able to chicken out of the game before they die.
My fireball damage is listed as 9807-10677. Meteor is 20448-21280. I don't wear any facets or other damage increasing / resistance lowering gear. Like I said, it usually doesn't get to the point where a meteor actually hits them, but if one does, they never survive it. I'm not sure how many fireballs can be cast before a meteor drops (with 105 faster cast rate), but I'd guess it's about 4 or 5 to kill them.
My current procedure, assuming I arrive in the game early enough is:
1) Party with them and work together on the council. This lets me steal drops and money and also get a small amount of experience for my efforts.
2) Take their TP back to town (why waste my own?) and go hostile as soon as I get there.
3) Heal at Ormus while I wait for the waypoint use delay to pass.
4) Take the waypoint to Frigid Highlands and clear any nearby monsters. Wait.
5) As soon as he appears at the waypoint, cast one meteor and then fireball the heck out of him. He's typically dead before he decides to move.
I've tried remaining in the party and cooperating on Eldrich, then killing him at Shenk, but that doesn't work so well for me. He moves away from the waypoint more quickly for Shenk, so I usually miss my chance there. When he actually gets to Shenk, there are enough monsters around him that I get myself killed fairly often that way. By going hostile before Eldrich I can usually get him at the waypoint, and if I fail, I can always get him while he works on Eldrich.
They're pretty quick about picking up things they think are interesting, so I'm not really very good at stealing drops from them, but I did get a half decent Gheed's from one guy tonight. He already had one (so did I), so he couldn't pick it up, but I managed to get a mule into the game to claim it.