Where was any of this stated?
In the red circle we can see that the Hakai has been stopped, but only for an istant (like Kidd says some pages later).
You can see the impact has been stopped but only momentarily.
A page later we see Law using his hand gestures to create a ROOM to teleport everyone (red circle). After that Zoro is not here in front of Hakai anymore so the attack shockwave is unleashed and the wave goes even beyond the skull of onigashima. (the red arrows show the movement of the shockwave). So Zoro did not take the full hit.
In the anime there is a dialogue of Big Mom on episode 1025 at 21:45 minutes where she says: "They got away from it ... I'm impressed" showing then Law, Zoro, Kidd and Killer in a total different position.
Next page we see Law asking about Zoro's condition (implying he saved everyone thanks to his ROOM teleport) and Kidd saying that Zoro blocked Hakai for one second. Meanwhile, in the japanese text Kidd says that Zoro blocked it "for an instant".
Kidd: 一瞬でもよく止めたなありがとうよ
Kidd: You blocked well, even for an istant. Thanks!
ENGLISH VERSION
JAPANESE VERSION
Chapter 1012
In both english and japanese version Law says that Zoro has 20 or 30 broken bones.
Law: ゾロ屋、おそらく骨を20、30本やられてる
Law: Zoro-ya probably has 20/30 bones broken.
ENGLISH version
JAPANESE version

You gotta choose here who you gonna take seriously sadly, the biggest skill you can acquire here

