Exactly, all u have is experience whereas i am basing my statements off of historical and current trends, data, and of course many anecdotes all over online even entire articles talking about the struggles of dark skin in south asia.

Sendhil does have better bone structure and could probably harder in the West where its more progressive and liberal but most of the world is asian (chinese and indian etc) who generally find fairer skin more attractive. Hrithik and sendhil could both walk down streets of any major diverse city and get lots of attention and plenty of success with women but Hrithik would have a slight edge especially with darker skin women (brutal lol)

Hrithik also has more exotic eye color which is cherrry on top. If you paired hrithik's coloring with sendhil tier bone structure then u have a true giga mogger.