Time Trial Champions and Levelpack Rankings are now calculated differently.
In general, the new method gives more points to average players. Until now, only top 99 players in each level could win more than one point in a level. Most players only gained 1 point and there was no difference between players below top 99.
Under new rules you always gain some ranking points by improving your position in the level. First 50 players get 1 point a rank, and each next 50 decreases the points/rank factor by half.
See also: Improving the global ranking calculation