First off, if you expected the 13 inch RMBP to have a dedicated card you are delusional or just haven't done any research. Also, if you need a dedicated card to do anything you would probably benefit from the extra screen provided by the 15 inch model. People hyping these products to be something they are not is getting ridiculous. If you want to play games apple has a variety of models including desktops and notebooks that will run any game perfectly fine under BOOTCAMP. I am an avid gamer who plays Guild Wars 2, XCOM Enemy Unknown, DoTA 2, Dishonored etc. all at 1900x1200 resolution with 40+ frames w/ my 15" RMBP.
PS- IMO the new iMac lineup price/spec ratio is insane. They are gradually catering to gamers and the fact that a 13" macbook release doesn't cater to gamer/editor crowd isn't horrible because with the amount of gaming and editing that I do I wouldn't want that small of a display. Just my rant sorry, I'm so tired of people shooting down product releases because they don't get their dream spec in a tiny machine.
PS- IMO the new iMac lineup price/spec ratio is insane. They are gradually catering to gamers and the fact that a 13" macbook release doesn't cater to gamer/editor crowd isn't horrible because with the amount of gaming and editing that I do I wouldn't want that small of a display. Just my rant sorry, I'm so tired of people shooting down product releases because they don't get their dream spec in a tiny machine.