i'm sure this is a newbie question but... are the cars the same? gtr3 is only a package with all the adac packages together?
Im not entirely sure that answer is correct. ADAC is not just a straight FIA GT3 car that can directly compete with Blancpain of GT Asia GT3 cars for instance. It's got it's own balance of performance to it that differs from other GT3 series as far as I know. In RaceRoom, the ADAC cars were also slightly different than the GTR3 class cars, but that is no longer the case.