In a way that's more than a little ironic, I feel like Deathstroke is the most fair character in the entire game. He can do everything very well: zoning, spacing, rush down, wake ups, etc.--he does it all well. But he does nothing that is easily abused. Follow any one strategy too hard and he'll get punished. But play at the top of your game, and you'll either win or make your opponent earn every victory. One of the reasons I really love Slade is that I know that when I win against a skilled opponent, I earned it; and when I lost against a skilled opponent, I earned it. That's a good feeling. I think Ryu would like Slade.
