http://www.eurogamer.net/articles/digitalfoundry-2014-pentium-g3258-review
I had a feeling that shamelessly unprofessional reviews from sites like TechReport testing 1-2 worthless dual threaded games would lead to erroneous conclusions that somehow 4.5Ghz dual core Pentium is fast enough for modern games. Checking proper reviews of sites like Sweclockers or Digital foundry or AT quickly revealed it to be grossly inadequate even for a GTX760 in games such as BF4, Crysis 3. Add Watch Dogs, Arma 3.
Not saying 4790K won't last 3-4 years but all it takes is 1-2 hugely popular games like it did during Q9550 vs. e8400 generation and it makes the purchase for 5820 worth it to dual GPU users especially.
Again, when the switch happened from dual to quad core, very quickly all Core 2 Duos became obsolete. We can't say when that will happen if at all in the next 5 years but then why even argue for the 4790k? In that case, might as well save $100 and get 4690k and upgrade when more games take advantage of more than 4 threads. This argument goes both ways.
Somehow people think paying $100 for HT is worth it but $100 more for 2 more cores is not worth it.....
Funny that you cite Sweclockers as a source... they didn't even overclock the G3258 for most of the suite and wasted 95% of the review on stock and integrated graphics.