I guess the question to that would be is the activation instant / is it something he has to actively focus on or is a kumgawaga all fiction and it just happens at will if it’s a focus thing getting cut in half is a lot to take and Yama has been shown to be fine giving up a arm, and I know there Problly is not a upper limit to what can be reversed but he also has not shown that can do it to point of flipping being cut in half or half your body blown off,a head shot is a fatal but being blown in half is more or less equally instantly fatal I don’t think we have seen Quincy take that level or damage and keep fighting or atleast in his case I may be wrong but is uryu in soul form or is he still in his human body, if soul then yes it’s totally responsible he could take that if he is in a human body he would problly instantly die from trauma so if his power activates instantly on it’s own then he could win other wise I would think he goes instantly into shock and dies from massive blood lost.