You may not know it to look at them, but the latest 13in MacBook Pro with Retina display models are thinner and lighter than the Retina systems they replace. Lighter is always better in a portable – but factor in the new MacBook Pro ’s increased battery life and the faster integrated graphics, and...
Much improved battery life; faster integrated graphics, Faster integrated graphics; much improved battery life
RAM not user upgradeable; skimps on RAM, flash capacity, RAM not user upgradable