NeverBackDown
AMD Enthusiast
Micro stutter is not stuttering. Micro stutter is a multiple GPU problem. Stuttering can be from CPU bottle-necking GPU. Sandy bridge and onward not really going to happen (stuttering) except in a few niche cases.
So yeah OCd 2500K still rocking most if not all games. Above a certain minimum, limit is all GPU.
http://www.eurogamer.net/articles/digitalfoundry-2015-intel-skylake-core-i7-6700k-review
http://www.pcper.com/reviews/Graphics-Cards/Skylake-vs-Sandy-Bridge-Discrete-GPU-Showdown
Yes it does provide a huge benefit to frametimes especially in SLI/Xfire. Bad frametimes can result in some stuttering. Also that article you linked shows that Sandy is pretty far behind Skylake in terms of peformance. Even when clocks are equalised. It's anywhere from 10-20FPS slower. I don't see how you can claim it's just as good when the tests you linked clearly show the opposite.