"Obviously", assuming there was something in the game's scoreboard tracking the fact that hey, five kills ago they were still at 6 deaths. But again the game's scoreboard doesn't track that. There's no 4th dimension to the stock stats. However, as others have pointed out, part of the game does track the killing spree of players (stored in the same game state as the player's name, speed, etc). I'm assuming this is what Btc exposes to the scripts. So what was to m00k's surprise would have no relation to just "look at the score list to compare deaths and kills". That was my overall point.

I don't know if Btc's system handles players leaving then rejoining. If he uses the method we discussed a while ago (keeping a copy of the relevant game state instead of referencing it directly in the scripts) then he could 'easily' cache old player information for later. However, leaving should still count as a silent death to the game engine, and in any case should reset any spree they had at the time.