Just my O but the 1/2 game is so rocky its not really +ev at all....maybe at 6 max but not at FR. The 2/4 and 3/6 tables have the same caliber players but they willing to gamble a lil ,defend their blinds and try to steal a few as well....
If you can beat 1/2 you can play 2/4 with the same roll and do much better hourly. At 3/6 u need a lil more roll and may need to practice table selection a little bit....
The real money is in the 5/10 FR tables when they are running, i can rarely afford to play them but when i do its like playing live games with 8 drunks....they sling chips on some of those games...
The most +EV games on Stars right now i think though are the 2/4 6 max....