With power management of the cores turned off or on? The best way of tell this is happening is with Intel speedstep off (or AMD's power NOW), otherwise you may be just seeing better power management of the cores, not better core scheduling.
Anyway without benchmarks this is a very difficult opinion to gauge (next to impossible in my view). Yes I've seen benchmarks stated elsewhere but not are the tests have been carried out satisfactorily.
Regardless it's only import if you
need better scheduling of the cores, otherwise the real benefit is not much more than a warm fuzzy glow inside you... works for some.