i've flown with 29-year old commanders or guys who got their command with around 29 and had only few years in the left seat (not in india, in germany!
).
if you have flown the plane and the routes for some years you know the job, fly-wise. BUT decision-making, leadership and social competence: sometimes
... not always that brilliant. YET it's a character-thing and i really thing that FO-time smoothens your style.