kaka it varies u know, one of your LUMS students can run circles around local boys here going to lake walla walla community college or run of the mill state college- satellite campus 2.3 etc. but if someone who has a generic BA econ from Pak, compared to someone with a decent degree here will be a very diff thing. or the many many pakistanis who come here after doing their med school in Pak and do exceedingly well here.
ppl are different, and especially in our society..some of the guys and girls in Pakistans well off families, even upper middle class are more worldly, more travelled, more confident, with it etc than many ppl here.
there is no monolithic homogenous western pak origin ppl entity and no monolithic homogenous pakistani entity. law of averages is only good to some point in time, at some point in time it becomes meaningless. There are traits that may be shared to varying levels by a large number of ppl in a group, but not all, and then you have sub groups.
a UK born desi yob from bradford vs. a Pakistani born LUMS MBA, honestly who would you think has better odds of making it, better approach to life and all..again generalization but to prove a point