Once again we see +Williamson's excessive credulity for things like visions and miracles being his Achilles' heel. We do not draw theological conclusions from such things, not ever. It's very easy for the devil to create fake miracles and visions.
I for one do not believe that God would ever perform a Eucharistic miracle if the Mass itself were displeasing to Him because that could be construed as a tacit endorsement of the Mass. So if Bishop Williamson thinks this "miracle" is legit (along with Garbandal, Valtorta, Dawn Marie, and all the other crap he believes in), then he has no business rejecting the New Mass or doing anything else that he does.
I'm sorry, but when people cling so much to these types of phenomena, that's generally a sign of weak faith. We don't need any of this crap to confirm our faith, and we most certainly do not theologize based on it.