Except for the nose-cone attaching on the 2nd element, I think it's also interesting how Mercede's top flap is also relatively "linear". What I mean is that if you compare it to the top flap of RedBull, Ferrari and especially McLaren, they all have this parabolic shape with a "dimple" focused on the outer edge close(r) to the endplates.
Basically, the Mercedes front wing seems to be generating less upwash.
Considering that the front wing shapes pretty much everything that goes on downstream, it seems like Mercedes is doing things quite differently to the others.
