The CPUs are irrelevant, either one will do the job just fine, however the graphics are another story... Ok, this is just plain weird:
I just did a comparison of Intel's flagship Graphics Media Accelerator HD with the ATi Mobility Radeon HD 5470 and found that the Radeon was 2.32x the power of the GMA HD. The GMA you're looking at is the (much) weaker sister of the already crappy GMA HD. The ATi Mobility Radeon HD 4250 has 2.34x the power of the Intel Graphics Media Accelerator 4500M. That's a 134% increase in power, it's like comparing a Radeon HD 5830 to a Radeon HD 5970. If you knew you'd be playing games with your computer, which would you choose if the price was the same? It seems that at any given laptop price point, the ATi Mobility Radeon will be more than double the power of the competing Intel graphics chipset. Couple that with the fact that Intel has some of the WORST gaming drivers on the market, it serves to show that Intel-based laptops should generally be avoided unless they have Radeon or GeForce graphics in them.