r u kidding? Amitabh did Silsila, which is considered the ultimate romantic movie of all time. have you not heard "Yeh Kahan aa gaye hum" or "Rang Barse" or seen those amazing histrionics!! AB can do everything that loser SRK can do & much much more....there is no comparison. AB is in a different league all together.
Speaking of SRK, can he do what Aamir did in Rakh or Rangeela. Or what Salman did in Judwaa or Hum Aapke Hain Kaun? When SRK can't be the best of his time, how can you compare him with the best of all time (AB)?