To make any of these site a success you need a massive publicity and marketing campaign, usually with a budget to match. First one into any field has a good chance of success, after that it is only marketing that will work. Either that or a great deal of luck. So, what is your angle? What makes your site unique?
Most of these sites also offer a limited feature free membership. The hope is that you will get enough of a conversion arte to eventually make some money. For your site you need lots of beautiful Asian women to pull the men in. How you do that is the big question. Have a look at something like http://asiafriendfinder.com to see if you can get any tips.
