Which of these laptops would be better for gaming?

Hi, please could you tell me which one of these laptops would be better for gaming. I know they are not 'gaming laptops' officially, but they are what I can afford.

http://www.saveonlaptops.co.uk/9S7-16J312-208-MSI-GP62-2QD(Leopard)-208UK_1849797.html?gclid=Cj0KEQiA2b20BRDj4buduIG-y9EBEiQAhgMGFeYUi0P8wUXwjFUYDpD919y8PGqvXbvGGqGFjyS9cnoaApNH8P8HAQ

or

http://www.johnlewis.com/lenovo-z51-laptop-intel-core-i7-8gb-ram-1tb-8gb-sshd-15-6-black/p2279114

Thank you for any help:D

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