Im not positive that the current HUDs do that , and even if they did, i dont think its a huge advantage. Players use statistical tools which could be seen as unfair , except they are so common now that a significant percent of players from the lowest stakes to the highest use these tools. Just having this data is not enough to make soemebody a winning player as it does not suggest a specific move, the player still needs to figure that out. High stakes players are just much, much better than lower stakes players, with or without the HUD.