I know well that they don't. I just used it as an example of a server where making high ppms is supposedly harder, to support my point #2 (see my post)
(all imho, since the right to answer about this is ofc. Paul's)
1. it is a bit hard to know the right factor for different mods, and having separate ratings would require more resources for tb. Same goes for the new rating. Takes resources.
2. That sounds a bit arbitrary, how can you calculate that factor? Then it would be better to change the rating system in such a way that (without factors) playing in big servers can't give you an advantage.
3. not everyone uses artillery, why should one get less points, say, as medic, if ff is on?
4. I think it cannot be done