It's funny, but prior to last season, everybody expected Eczacibasi to dominate due to the partnering of what was then widely considered 2 out of best 3 players in the world, and we know how that turned out. This year, everybody expected Fenerbahce to not only finally be a real contender for the first time in years, but actually to win all domestic competitions (just check earlier in this thread). And indeed, on paper, they have the strongest squad. However, thus far, Eczacibasi has no defeat in any competition, while Fenerbahce has 3 (2 of those to Vitra).
Of course, it's just a start, and Fenerbahce may end up winning both the league and the cup, but in both cases, we were blinded by the names involved, without considering the fact that they were newly constructed teams, with players who don't have much experience playing with each other (at least those most important). It's that factor, continuity of squads from year to year and the experience of playing together, more than any other single factor or player, that contributed to such a profound dominance of Vakifbank over Turkish volleyball in the last decade. And it's exactly that which this year's Vakifbank team most lacks.