The way I understand it now is:
Betrayal pot is the total number of points your 'team' has scored. Each individual player get his own points, so you'd have 1 player with 12 points, 1 player with 3 points and their pot would be 15 points, correct? (As in, the pot doesn't correct for the whole 'relative points value' thing).
If you betray, you steal their points, so for the 3-points-player this would be a good move. That would give that player all 15 points and cost the other player 12 points.
If he frags you back within 30 seconds, you lose all 15 points and he gets them. Correct?
Do other non-ex-teammates get extra points for fragging a rogue too?
God...this is complicated :/
Hmm, I thought I worded it pretty clearly but there's only so much you can explain when you're trying to condense it into 4 minutes. You know this whole "TL;DR" generation..
Again, any kill regardless of what team member made it or how many points they got off it individually, is put into the pot as 1 point. So it's not equal to the total number of "points" your team has scored, but the number of kills.
So one player could have 12 and the other 3 on the scoreboard, and their pot might still be only 4 because those were from 4 kills but player A killed a guy with 7 value and a guy with 5 value (12), and player B killed a guy with 1 value and another with 2 value (3).
When you betray you steal whatever is in the pot. even if you earned many of the points in it, you get these again. You get the whole pot, points aren't subtracted from anyone else's score or anything like that. But you also get whatever the value is over the teammate's head that you betray. Again this is relative to how well or poorly they're doing compared to you. If you were in last and they were in first it would probably be something like 10. so if the pot was 15, and they were valued 10, you'd get 25 points for betraying them.
If they managed to get a retribution, they would get your value which would be 1 since you're below them in score, plus the Rogue value (6, don't ask why, this seems to be an arbitrary value the programmer chose).. and possibly some other things contribute to the final value. So a retribution wouldn't steal the points back but it would give them a boost for sure, possibly sending them over the top for the win.
So when the pot is low it never pays off for a high value player to betray a low value player. They'd get something like 2 or 3 points, and if the betrayed teammate got payback they would have around a 16 point bonus. So in fact if a a low value player is clever he or she might try to provoke the high value player into a betrayal because of the low risk vs high potential of payoff.
Other non team players do not see the rogue value at all because they were not the ones betrayed. Anyone on the team can get retribution even if they were not the ones killed, they were still "betrayed" if for no other reason than that the pot could have been theirs instead.
Hopefully this is starting to make some sense.. I admit I don't know 100% of the details but I have been scrutinizing the gametype hard since I got a hold of the first beta, so I've had longer than most to figure it out.. I've even dug into the code to look at the functions and values. It's not entirely clear but the only way I'd have a better understanding now is if Epic cooperated with me on it officially.