[ISF]

You could probably model this, but because of sample size issues you couldnt use standard statistical methods. If you took a bayesian approach and assigned everyone a prior ev against you either based on a guess from their play, or via their pokertracker stats and a prior probability. Then adjusted this using standard stats methods based on your ev against them in actual play you could probably get a resonable estimate of your actual ev vs them.
You could then pretty quickly figure out wether you were +EV vs any table on average. To take position into account would be much more difficult and probably not worth the effort.