First off, stuttering corresponds to long frame times, which I addressed when I pointed out that the 95th percentile frame times are the same or better for an i3 than a 860k.
Secondly, the only reason I brought up future-proofing/upgradability is because you claimed that 860k will be a better option for the future. I'm pointing out how, if you're concerned about the future, an i3 will actually be a better option. And we've already established that it's a better option if you're concerned about the present. Of course, the downside is that it costs more.
Finally, as far as games are concerned, they only see how many threads you have. The OS sees a 4-threaded CPU, and that's what the game sees. Of course, 4 physical cores are better (e.g. i5), but Intel's massively better per-core performance is more than enough for a 2C/4T i3 to beat an a quad core 860k.
If you're arguing that the 860k is better value for money, that's one thing. But it seems like you're claiming that it's a better CPU, and if that's the case, you're objectively wrong.