I've played this match alot! here's the most useful things you could do:
- Be careful when trying to approach him when he's zoning with the Butterfly.
- watch out for reversal HS fujin on wakeup, and try to bait and punish it.
- use BBU wisely, it beats most of his moves and goes through the start of Butterfly.
- 6K, 5K and 2H are your best weapons, I suggest u use them alot (2H jumps over his lows).
- on oki 6K and 2D are good, especially if your opponent likes to wakeup grab , but watch out for 6K autogard!
- try to predict his stomps and air grab him.
- 6P can pass through his Butterfly.
- you can CH DOT just when he's using Butterfly, but I don't recommend is unless he's got just a little bit of life left.
and that's all I know for now