BE, simply in a certain level of specialization against his yrs of exp. such offer could be either so aligned or very good or very bad!
Its a very basic thing, do you know how much he earns for the US against his yrs of exp.?

Such metric is crucial in evaluating how good an offer is, even if its not that good from ur perspective for westerns in Qatar for example, still it could be a better option compared to his level of living for example in the US.