nah man, just a lie. also my clearly informed self-proclaimed expert opinion is that Bloodborne has worse hitboxes than that, especially in pvp, so you can tell it's a fabricated lie.
on a serious note though, pvp was arguably the best part of DkS2 and I actually had fun with it. reasons being that it was completely broken and it actually worked consistently, or at least more than the typical ''summon/invasion failed'' spam I got used to in the other games.