In the E3 Build, Zack was mid-high tier because of his frame advantage and stun game. Here is a list of the stuff he had.

-Zack's stun game was extremely high, because he could combo off of his
almost guaranteed because the recovery was really quick.
- He had CB straight after
. Mate, do you know how sick that is??? He could just get that in, BURST! Guaranteed combo. That is too good.
-He had higher bounce launch on

/
so that he could do 



without it whiffing. That is frickin' sick! He also had higher bounce launch on
(
) so that you could do the same thing! That's on NH guys.
-He gained his


. He needs this back in the game.
-His transitions from Duck to Sway were faster to go into, and his Sway would evade jabs from mid-range.
-Zack had better recovery on his
(
)

strings and his 


. He could block an incoming attack where as in DOA5 (Ver1.03A) He had a "Prepare Your Anus" coming for you if it was blocked.
-His
gave relaunch in air for a possible Sway and Blanka Ball.
-After CB, His
could guarantee a 



without whiff on the
. It had faster start-up frames then.
Anyways. Zack was WAYYYY more safe overall, along with almost every character in the build at that point.
-Zack's stun game was extremely high, because he could combo off of his
- He had CB straight after
-He had higher bounce launch on
-He gained his
-His transitions from Duck to Sway were faster to go into, and his Sway would evade jabs from mid-range.
-Zack had better recovery on his
-His
-After CB, His
Anyways. Zack was WAYYYY more safe overall, along with almost every character in the build at that point.
"Kick it up a notch!"