Which laptop should I get for gaming?

Lenovo G770 10372KU:
- Intel Core i5 Processor 2.3GHz
- 6GB SO-DIMM RAM
- 750GB 5400RPM Hard Drive
- 17.3-Inch Screen, ATI Radeon HD 6650M Discrete Graphics
- Windows 7 Home Premium, 3 hours Battery Life

OR

Lenovo IdeaPad Z575 (12992PU):
- Operating System: Windows 7 Home Premium 64-Bit
- CPU Type: AMD A6-3420M 1.5GHz
- Memory Size: 6GB DDR3
- Hard Disk: 500GB
- Graphics Card: AMD Radeon HD 6650M
- Video Memory: 1GB
- CPU L2 Cache: 4MB
- CPU Support: 2.4GHz max speed
- Graphic Type: Dedicated Card
- HDD RPM: 5400rpm
- Memory: 6GB

OR

Lenovo IdeaPad Z570 (1024DMU):
- Processor: 2nd Generation Intel® Core™ i5-2450M processor (2.50 GHz with Turbo
- Boost 2.0 up to 3.10 GHz)
- Operating: System Genuine Windows® 7 Home Premium, 64bit, English
- Memory: 6GB Dual Channel DDR3 SDRAM at 1333MHz
- Hard Drive: 500GB 5400 RPM SATA Hard Drive
- Video Card: Nvidia Geforce GT 630M 1GB


I'm looking to play games on the laptop such as Guild Wars 2, Tera, League of Legends.


The requirements for Guild Wars 2 is:
• Windows® XP Service Pack 2 or better
• Intel® Core 2 Duo 2.0 GHz, Core i3, AMD Athlon 64 X2, or better
• 2 GB RAM
• NVIDIA® GeForce® 7800, ATI X1800, Intel HD 3000, or better (256MB of video RAM and shader model 3.0 or better)
• 25 GB available HDD space

The requirements for Tera is:
• OS: Windows XP (32 bit only), Windows Vista, or Windows 7 (latest service pack)
• CPU: AMD Athlon 64 X2 6000+ or Intel Core2 Duo E6750 2.66G
• RAM: 2 GB or greater
• GPU: AMD Radeon HD 3870 or Geforce 8800GT
• HDD: 50 GB of hard drive space (25 GB to download, 25 GB to unpack)
• DirectX: DirectX 9.0c
• Optical Drive: DVD-ROM Drive

The requirements for League of Legends is:
• 3 GHz processor
• 2 GB of RAM (Windows Vista and 7 users will want 4 GB of RAM or more)
• 6 GB available hard disk space
• GeForce 8800 or equivalent video card (Dedicated GPU with 512MB+ Video Memory(VRAM))
• Support for DirectX v9.0c or better.

If you know of other laptops that are $700 and under please feel free to share. Also I'm just looking for a laptop that can play the games smoothly on low~ possibly high setting.