Newer "modern lens" with higher amount of glass elements/groups can often robbed the quality of light. A super sharp lens with capability to obliterate background don't necessary give you the 3D pop, a lot of Sigma Art lens from what I have seen do not have the "pop"...they often look uninteresting and quite flat to me. Awhile back I read somewhere the 3D pop consists of a blend of contrast, vivid colors, lighting direction, DOF, and decent sharpness at the plane of focus, with key element being the micro-contrast. You can check out this article below explaining the 3D pop in a more scientific way....
I'de say that blog isnt very scientific.
Some of the samples dont even have the same exposures, and T stops are not the same as F stops.
I have a pair of old zeiss lenses that fit into his definition of 3D lenses, and at the same time, a modern lens like the voigtlander 65 APO looks to have them beat: http://www.fredmiranda.com/forum/topic/1451413/52