Since when does the amount of wings equal performance? McLaren has said several times that this is the baseline configuration that will be used for correlation for the package that will arrive in Melbourne.
Some quotes from the analysis from Autosport:
The bargeboard area and the floor section is very intricate. Casting an eye over something as complicated as this is wrong - it's best just to say it has lots of components in all the right places
McLaren has done a first-class job. There are lots of bits in all the right places, but only the team knows if more development is required
Yeah McLaren hasn't done everything perfect, but please stop acting like they are some kind ultimate retards.McLaren has three small slots in the floor in front of the rear tyres, helping to seal the underfloor and diffuser in this area, but it also has two long slots down each side of the floor. McLaren is the first team to do this.