For the major US airlines, the only one that will match you to platinum is probably Continental. They have a pretty strong program and give strong system wide upgrades.

United will allow you to do a challenge to get to status, so you are better off switching to Continental, which will merge into United's program next year.

AA also makes you do a challenge.
US Airways does not match status (and you probably don't want to fly them since they have no international presence in NYC).

I summed up status matching on my blog here.