(personally, I think it should be a weighted average giving more weight to more recent stats--not because they're MY stats, but because they reflect the current metagame better, seeing as how they're, well, more CURRENT).
That IS how they do it, I think. At least in Generation IV. There was like some statistical formula they did at the beginning of Gen IV to calculate the weighting each month should have. As far as I know, they've still been doing that.
And thanks for the stats! :D
I've had a request from Malvira to only count teams used by players with a rating greater than 1000. Apparently, RD did this in the last cycle. Battle logs do not include ratings, so the only way this could be implemented is by using CURRENT ratings (in the future, end-of-the-month ratings). My own feeling is that this is a pain to implement and not the best idea, but I'm interested to hear what people have to say on the subject.
About weighted stats due to ratings, I don't think it's a good idea. I'm not a very good player, and I don't like the fact that my battles will sometimes not count towards the stats.
The way I see it, the tier lists are for EVERYBODY, not just the best players. So I think it's best to count each usage equally.
It might be interesting to see what they'd be like anyway, but not use them for the tier lists, but that could also get problematic. It's quite obvious judging by some attitudes of the members on this forum that:
a) any Pokemon that ranks lower in the stats that only includes the good players will be seen as a "n00b" Pokemon from that point onward. Anybody who uses that Pokemon will probably be given a hard time for it by some people. That isn't the way it should be, but read some of the posts in this thread to see what sort of thing we could be getting.
b) a lot of the new players who want to be good will look at the stats of the good players, and use the Pokemon that they've been using. If something random like Swampert or Chansey was 10 places higher in the stats of the players with high rankings, then all the new players will see that, and just start using that, because they think it'll make them good.
I'm fine with not being a part of the suspect testing, because I'm not good enough, but I think at least the usage lists should include my, and everbody else's usages, because we're playing in the tiers too. Tier lists are supposed to show how much a Pokemon has been used, and it's unfair if the lesser-skilled players aren't counted, so the Pokemon that they're most likely to be seeing get under-represented. If anything, it's the less-skilled players that need the tier lists most, so the people they'll be battling should be included imo.