You came within the servers to see people who had? Maybe you should try but can you take a surprise.... A lot of servers indicate that they are full when in fact there is nobody inside. This is because of booking system. The actual number of online players do not think that's much higher than that of RF2, only spread differently. In rF2, the vast majority of players come only once a week to contest the race of their league. You can see this clearly in the server rotation most played every day, one day is one's, another day another's and so all week. In AC, most players will not run in leagues, come several times a week to play short races. The real difference is the amount of people there are online daily and the total number of hours played online a week. This number will surely be much higher in AC, there is probably a difference of x2 or x3, but total number of online players'm sure it's very similar or even higher in RF2.