There are tons of differences other than the tweeter, and it's quite strange to just randomly pick it like that. Dunno why people are so often concerned with driver materials, unless you're the actual speaker designer they don't matter.
For example, the Salon 2 have significantly wider dispersion than Genelecs. This matters a lot if you're still stuck with crappy stereo and not multichannel, because more dispersion means more envelopment, generally speaking. That's due to the different waveguide and the midrange driver, not the tweeter material.