My PC V.S. My Friend's PC

I've made multiple threads where I've mentioned that My friend and I have built PC's, but I have a question that I expect some varied answers on. My PC was made with price-to-performance in mind, while I have no real clue what my friend had in mind and I'm too lazy to ask him. I went with AMD parts, while he went the Intel nVidia combo, and his is VERY Brand-Biased. He went off of really old benchmarks and some that had nothing to do with gaming for his part choices, and told me that his were the best because they performed best in these random benchmarks. My Rig cost me around $850 at the time, while his cost him about $1200-$1300 when he bought it. Normally, most people would say that the higher price means better performance in gaming overall, right? Well, here's the thing. My build can outperform his build in multiple game such as Borderlands 2 and sometimes TF2. I don't know if either game is more optimized for certain brands, but we both play all games maxed out and get well over 60 FPS. I'm just a bit confused at some of his part choices, which I will be supplying through PCPartPicker links below. He decided that an i7 Processor as well as 16GB of RAM were "needed" for better gaming performance, yet he still gets puzzled when my FX-6300 and 8GB of RAM outperform him, and I forgot to say our GPU's are pretty much equal. I'll leave both of our rigs below, and I want to know what you think is better for the money and please explain to me if for STRICTLY gaming his i7 and 16GB of RAM will benefit him in the near future (Near meaning 1-2 years). Lastly, his motherboard is an ASUS Sabertooth Z77 and I can't seem to find it on PCPartPicker, so I'll just use an Amazon Link for that.

MY RIG:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-6300 3.5GHz 6-Core Processor ($114.48 @ SuperBiiz)
Motherboard: Gigabyte GA-970A-D3P ATX AM3+/AM3 Motherboard ($79.99 @ Newegg)
Memory: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory ($84.99 @ Newegg)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive ($64.99 @ Newegg)
Video Card: HIS Radeon R9 270 2GB Video Card ($215.66 @ Newegg)
Case: NZXT Source 210 (White) ATX Mid Tower Case ($33.39 @ Amazon)
Power Supply: Corsair Builder 500W 80+ Bronze Certified ATX Power Supply ($39.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.98 @ OutletPC)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($84.99 @ NCIX US)
Total: $713.46
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-07 16:20 EST-0500)

HIS RIG:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i7-3770 3.4GHz Quad-Core Processor ($295.42 @ OutletPC)
CPU Cooler: Corsair H60 74.4 CFM Liquid CPU Cooler ($69.98 @ OutletPC)
Memory: Corsair Vengeance 16GB (2 x 8GB) DDR3-1600 Memory ($159.99 @ Newegg)
Storage: Western Digital Caviar Black 1TB 3.5" 7200RPM Internal Hard Drive ($87.97 @ OutletPC)
Video Card: EVGA GeForce GTX 660 2GB Video Card ($189.99 @ Newegg)
Case: Cooler Master HAF 912 ATX Mid Tower Case ($59.99 @ Newegg)
Power Supply: Rosewill Fortress 750W 80+ Platinum Certified ATX Power Supply ($129.99 @ Newegg)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.98 @ OutletPC)
Operating System: Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit) ($84.99 @ NCIX US)
Total: $1081.30
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-02-07 16:32 EST-0500)

His Motherboard: http://goo.gl/zkevwp