You also need to consider that to be useful to a customer the aeroplane has to have performance over a range of missions - different leg lengths, different cruise altitudes, different load capacities etc. You also can't consider the wing design in isolation - the optimum wing design varies with engine choice, structural concept, intended control system etc. I know of one aeroplane design where a "more efficient" set of wing sections had to be abandoned when it came to light that the pitching moment characteristics of those airfoils would need an additional 800kg of fuselage structure to make it stiff enough to avoid phase-lag resonances between wing and tail.
Also consider that "wing section" is a two-dimensional thing that's only used for initial . Real wings are 3-dimensional objects over which the air almost never flows directly parallel to the velocity vector. So the 2D section data is only really useful to schoolboys!
In other words - the design of aeroplanes is never just a "throw a set of numbers into a database and let it get on with it" thing - it needs engineers to do teh hard stuff.
PDR