[soko]

The player who can know the flop cards will have a huge edge before the flop comes out, so the other player would never want to play a no-limit version of this game, if the game was fixed limit then:

After the flop comes out the player who can see the other players cards has ALL the information while the other player has no edge.

The player who can see his opponents cards has the edge on flop, turn and river while the player who can see the flop only has the edge before the flop.