What you are saying is again partially true. First of all I don't really see why this s/o-d/o actors/actresses came into this. It is a simple question which needs a simple answer and a little justification for ur choice. Even after u have wrote this much the fact "is" that SRK is the most over rated actor. There is a reason why so many people say so and u can't question them.
Remember being s/o-d/o actor/actresses bring an added burden. People compare them with their fathers/mothers. People who are of the first generation have nothing to lose. If they win they can boast of doing it alone. And those who coudn't...well who remembers them then?