I kinda wonder how Sony made there drivers though since someone said that Sony makes the drivers for there laptops but I remember talking to one of the techs at Sony and they said that they do take the generic drivers and then modify them to work the best for laptops. Like certain laptops that have same specs would use the same drivers and others will use different modded drivers. Since it seems like it's the safest to use OEM drivers from Sony and other techs I talked to even localy.
But maybe someone in here might know about Sony and how they make there drivers since it seems like there drivers are made differently since there version is different from Intel.
You are always best off using drivers from the manufacturer.
As you say, the Intel drivers will be different than the Sony drivers, and should not be applied.