There was a time in Hindi cinema that all the dream-girls were from South - Rekha, Jayapradha and Sridevi. After their retirement, the likes of Madhuri, Juhi, Kajol, et al. took over. In Tamil, it was quite the opposite.. until recently, most heroines were from the South India - Ambika, Radha, Revathi, Gauthami, Soundarya, Meena, Rambha, and Devyani. No one ruled Tamil cinema as much as Simran and Jyothika did.. and they both are Punjabis.. So, unlike in case of heroes who usually dont break language barriers towards complete shift, the heroines tend to act in more languages. It would be more suitable to call Sim, Jo, Sonia, and Namitha as Tamil heroines, simply bcos they act most in Tamil.
Currently, the heroines most-in-demand in Hindi are Preity, Rani, Kareena, Priyanka, Bipasha and Mallika. In Tamil, they are Jo, Asin, Nayan, and Trisha. Right now, my heartthrob is Katrina Kaif, whose first film, I think, was 'Malleswari' in Telugu and now she has a handful of movies in Hindi. Aishwarya Rai, arguably the most beautiful Indian celebrity of recent times, was introduced first in Tamil. Hindi has heroines from Punjab, Bengal, Gujarat and Maharashtra, whereas Tamil gets its heroines from pretty much all Indian states. Analyzing all these factors, kootti kazhichu parkkumbodhu, right now, the scenario in both sides is similar. So, I would say that both sides have some equally good-looking actresses and some so-so ones too.. The score still is tied at 1-1.