Brundle mentioned it. Because they have limited use in practice and qualifying the teams have really optimized it so its giving massive advantages.
Meh, some cars had an advantage, some didn't, the main thing is Ferrari have good straight line speed anyway and a good DRS, Merc's DRS has struggled to pass people in all the races so far, its not working well at all, and you can see visually in races that you can barely see the Merc's DRS when its open, its a tiny slot, while other guys the DRS makes the rear flaps disappear almost completely. Merc needs to sort out their DRS badly.
Also, what the hell is with the punishment/stewards in the first few races, they are ignoring blatant issues like pit releases, they are refusing to punish people in race and letting people get away with everything.
Perez flat out should have gotten a penalty, Kimi is clear as day got his front wheels well past Perez's rear wheel's, is completely alongside and then shoved him off the track, that wasn't even a "do it after the race" rubbish, it was decided to not be anything at all.
Honestly I think Webber should be penalised, or the team, he was dangerous out there on the track, slow cars are very dangerous on a track, that was dangerous, and then almost caused an accident which was as predictable as Alonso last race, unfair on Webber, but in those situations they go around, block everyone, almost cause accidents, didn't make it back anyway and had he even made it back... he was out of the race anyway and would have been at best a lap down, maybe a couple more, very silly.