Actually, it has something to do with the GI coming from behind ZWEI.
Why ZWEI is stupid
EXPLANATION: ZWEI was free to move. EIN triggered the GI but is a seperate entity, and since ZWEI is not affected by EIN's movements he could guard effectively.
Show in another CE timing
https://www.youtube.com/watch?v=Yq_geGwpNuE
https://www.youtube.com/watch?v=Yq_geGwpNuE
