Still LOL. I have heard this advice before. Yep,it was with the E8400 and Q6600. Luckily I went with the Q6600.
Nah,I wouldn't get the Pentium dual core,unless it was for a older game.
I had Core i3 CPUs in the past,I regretted not getting a Core i5.
However,I would get a Core i3 over a Pentium dual core.
Also,pclabs has had wonky testing in the past. Their BF4 MP article was terrible. They used the tiniest map they found with only a few players and their results were just useless. Sweclockers just embarassed them with that one. They actually tested a map with 50+ players,did long test runs(at least 3 minutes),did multiple runs,etc.
Edit!!
Also,are any of those engines in the games that new??
I suspect within 2 years they will be replaced by new ones.
That is after all why you went with a Core i5/Core i7??