What are the difficulty sliders(?) Like when are you on All star or HOF. I haven't been able to find the information on that.
If you and your opponent are both ranked 700+, the game will be on HOF. If you and your opponent are both ranked 900+, the game will be on Legend.
If one player is ranked 700+ and the other is ranked 900+, the game will be on HOF.
If one player is ranked lower than 700, the game will be on All-Star regardless of the ranking of the other player.