this is bull, flash! Granted, very mediocre rules (ha .54) and horrible penetration, but a 20-1 spread, and "blatantly sitting out all negative hands", as the poster said, in original post will more than break even, even with a level one count that you find so weak, flash. I know this without even running a sim, because several years ago, several of us simmed a 6 deck game that the player, an older gent that i met on the train, was spreading 2-1 and exiting all negative counts and
he, much to my astonishment was playing a slightly winning game of between .25 and .5 unit per hour depending on the sim. Granted that is not much, especially when talking about a $5 unit, but it is a winning game and that with a 2-1 spread. I am sure 20-1, even with lousy penetration will do better than that.
It really does not take much more than just sitting out all negative hands to turn most games even. Of course an even game doesn't do much for me.