The latter, aka, Prevasion.
Anyways, I talked about this matchup with
@Smashtwig off-site, overall it's a mismatch as either Zygarde AP stomps (Thousand Waves then Core Enforcer can bypass Prevasion), or GV hax stomps if we use the ASG3 key (as then Prevasion can't be bypassed out of being 4D and layered).