In my experience, vision is pretty much the same below about 20 wins in 3 seasons. Also, vision isn't an absolute. Having "x" vision doesn't mean you can see everything below a certain line. It's more like a percentage chance of seeing any particular recruit, and the better the recruit, the harder he is to see. Once you get above around 30 wins in 3 seasons, you'll start seeing more and more of the undecided recruits that the SIMs can't see.