I'm not going to even step into the ring to debate clocks and other super nosebleed fanboy stuff. I use a 6700k, liquid cooled, mild overclock to 4.2g.
I don't stream, I do game, and more than that I do a buttload of audio and video production with it. I've never experienced hardship because of my cpu choice.
It's never been slow, it handles as many tracks as I've ever thrown at it, with loads of power hungry plugins all at the same time and never so much as burps.
I've rendered massive video projects and not felt it was slow.
I can't speak for the other chip, but if it's comparable in any breath, I don't imagine you having any issues either way.
These guys will argue about it for months after you've already purchased and got on with making your content and gaming away... I just don't see your uses hitting the wall or even getting close enough to the wall for you to see it sweat.
Just imho, take it how you will. But from a working with it every damn day for music and video production, the 6700k hasn't let me down even when running HUGE projects.