Why x2?

I think I have asked this before somewhere (long time ago). But anyway, why is the PL score the same as the number of pairings won times two? A percentage would make much more sense to me. Or just skipping the multiply with two part.

May be because of tie (exactly 50% APS) - in this case both bots get by 1 point.

Or 0.5 points without the multiplier.

I'm not sure, but i think, that it is you invented PL and you was inspired by English football Premier League. So you must understanding better rules of PL, than i, since i'm not football fan:)

Or, maybe, it was Pulsar. I'm sure, that it was European, but not Englishman and i think it was Swede. I saw conversation about it somewhere in old wiki, i think

I think it's very likely Darkcanuck just copied what was done on the old RoboRumble server, and I think the soccer (er, football) reference is accurate there. I guess I would also prefer to just see wins instead of (wins * 2). Not sure I've ever seen a tie anyway...