It's not about something "newer" that is better. It's the problem that manufacturers build shabby gpus into most laptops. Imo there should only be 3 gpu models per generation: lowend for no d3d-usage at all, medium for average gamers and highend for full detail gamers. But currently the market is flooded with mostly useless mobile gpus. And not just that but the gpu manufacturers even trick people by giving the mobile chips similar names to the PCIe chips even though they are completely different and way slower.
That's why it's important to research every part of the laptop one wants to buy(for cheap laptops there's always a component that won't do any good).