What laptop will be better for gaming ?

http://www.currys.co.uk/gbuk/hp-pavilion-dv7-6154ea-17-3-laptop-steel-grey-10783805-pdt.html

or

http://www.currys.co.uk/gbuk/hp-envy-14-2002ea-beats-edition-14-5-laptop-black-10783796-pdt.htmlWhat laptop will be better for gaming ?
MAC