Well against sinestro, doing a escrima ground spark allows NW to duck his fear blast. It also causes sinestro to jump considering that NW would win that trade 75% of the time unless sinestro has trait. Causing sinestro to will also allow me to bait him as he's coming down by slightly delaying the ground spark, and if I think he's gonna do a move, I do a stance cancel into staff ground spark.
Well now im in staff which is not good because sinestro can abuse his zoning options and I have to play the patient game which can allow sinestro to build his trait. Sometimes NW can squeeze in a lucky staff ground spark but as I said in a earlier post, I'll be taking a risk so usually I would just go back to escrima without canceling into a special.
Now what if I didn't go back into escrima and sinestro is keeping me staff??? Well what I do is just slowly walk forward and close distance in hopes of playing the infamous staff footsies while also keeping a eye on his trait, and luckily the mb fear blasts are poopy up close so sinestro would have to play my game. Either way staff is poopy against sinestro 80% of the time.
I hope that helped man. @AK L0rdoftheFLY could explain this way better thn I could. Im just the guy for the action.