this message may be
offensive
And as they themselves mentioned, Alucard doesn't only suck the victim's blood but also their souls, and stands are LITERALLY SOULS, even if couldn't see or hurt The World directly, he could still weaken it and possibly kill it, which is a definitive way to kill Dio. And they higly overestimated Dio saying that he wouldn't leave an opening when in canon HE HAS LITERALLY LOST SEVERAL TIMES AGAINST WEAKERS OPONENTS HE COULD NORMALLY OBLITERATE BECAUSE HE KEEPS LETTING HIS GUARD OPEN, heck, even after becoming a vampire he still lost to Jonathan twice and would maybe have lost a third had Jonathan not been caught of guard in such an unfavorable situation. And even if we were to ignore all this, it's been implied that destroying his brain is enough to kill Dio, he admited so to Polnareff and he always priotized his head over everything else, ginving Alucard a chance to kill Dio just as Dio would have by destroying Alucard's heart, and while destroying his brain still wouldn't be easy given all he's survived, it's still a viable possibility. Still though, Dio could do sourprisingly better than expected and if we were to run this a hundred times, i'm not sure who would win the most. In short, i don't know wether to call bullsh#t or not on this.