Let’s look into the major weapons of each.
The Red Bull X2014 has a downforce-generating fan to keep it going flat-out in almost any corner.
The McLaren MP4-X is has electrodes for active aero control, plasma generation, and a ground effect underbody.
The Renault RS2027 has a more basic active aero system, but also has active suspension, as well as 4WD.
Ferrari’s concept, however...I dunno. It wasn’t like they were totally serious about cutting-edge technology for this, not like the other three.