Not really in my opinion, resistant means that once ASICs are out they won't have a large advantage over the GPU/CPU miners and the latter group can still compete with them. It remains to be seen if that is possible and how large the advantage of ASICs will be.
I have worked with people that produced ASICs scrypt and sha. Also talked to them regarding X11. An ASIC will always be better than a GPU/CPU. If there would not be an advantage the companies would not do it, as the tapeout is too expensive. In fact they will only do it, if they outperform by a wide margin.
Due to the high upfront cost an ASIC is a huge entry barrier.
ASICs will lead to significant concentration in the mining sector.