Thanks @ozelli, one must admit that a system as is, one that allows 5 times as much Gleason 4 to be called less serious than the one with only 20% of the Gleason 4, must be called totally broken. That x+y gleason stuff is antique, I mean in past it seemed a way to quickly be quantitative but no longer. I understand how and where it came from but still, as it is it makes significant gross errors by the way it is done. It is a system that allows 5 times as much gleason 4 to pass as less serious than only 20% of the gleason 4. That has huge ramifications. They need to make some corrections. I guess it won't happen soon, so yeah what can we do? Not much as individuals perhaps.