I read that review as well. Everything I could find says that my old sandybridge cpu is not going to gain much due to some technical stuff I don't understand. I am running a 970 gtx and for the most part, everything is running pretty well. Arkham knight is really the only thing I have played since getting the card and the new 1440P monitor. (96hz refresh FTW!)
 
What I did find was that I finally figured out that AIDA64 monitor (thank you Bob16314!!) I was using 7.5 gigs of ram a lot of the time. I have been having a few stutters now and then and my usb headphones have been cutting out for a few seconds during high intensity areas when I game. I slapped the 2 new sticks of ram in and to my surprise, I can honestly see a difference. No stuttering, no more audio drop outs and things are just smoother overall. It didn't make sense to me as I was still under 8 gigs of usage before installing the ram but maybe it reserves some or does something so it doesn't use 100%
 
Since installing the ram and checking it's usage, I have hit 9.7 gigs a few times so I guess it was somehow being limited. Maybe faster ram would have yielded a few more fps but then I would have spare ram to sell and would have to spend another $40.
So I guess I learned a bit and to answer my own original question, Yes, to a point, I do see some difference moving to 16 gigs. I am curious to see my usage in other games but I need to finish Batman first. I can't skip around!