1) Yeah, I agree, for WoW. For other games, it does not matter as much, just look at benchmarks:
https://www.techpowerup.com/reviews/...3_1200/12.html
In BF1 at 1080p, since someone with an R3 1200 is likely at 1080p, the difference between the 1200 and the 4560 is pretty small. Since you can OC that 1200 to 3.8 prett easily, you can see it will likely be better than the 4560, especially since that is a game that DOES make use of more core well
Civ6? Again, a game that relies on CPU pretty heavily and the stock 1200 beats the 4560. You can OC the 1200 and do even better.
Deus Ex: Mankind Divided, the difference between the two is minimal. 3 FPS. OC the 1200 and I bet it wins.
Dishonored 2, stock 1200 beats the G4560. Once again, the 1200 can be OCed and perform even better.
Doom, difference is marginal at best. 1.1 FPS, which again, when you OC that 1200, it's gonna win.
I can go on and on.