Well, I do think all 3 of the titles are used to hype up those who wield them, for a good reason, because they are the strongest.
I explained in my other thread that they were obtained in different periods and why the WSC>WSM>WSS doesnt hold weight in present.
I agree that in the case of WSC and WSM, DF was a significant part of their power but they had other things that also were on a high level which made them into the strongest while others, as you pointed out, despite having the same DFs arent World's Strongest, despite Blackbeard bragging about it.
I would be very surprised if Fujitora obtained WSM, which would make him stronger than Mihawk, considering his lack of haki of handful of the strongest. Also, I dont think WB=Roger and no, I am not a fat fuck who thinks WB would win due to DF, lol.

What Roger has going on for himself is those statements that they are equal and WB never wielding the WSM during Roger's era, despite databook saying so, I only give credit to Oda's direct word - manga and SBS. Due to that, they may have been equal indeed but if WB had WSM during Roger's era, he was stronger, despite the claims of equality. The battle between Roger and WB that he saw indeed shows them as equal but that battle was never fought until a winner emerged and I think that would have been WB, IF he had WSM during that time.
If Akainu and Aokiji ended their battle after 3 days, they would be equal too. However, we saw that after 10 days, one emerges victorious. I think Mihawk vs Shanks is exactly the same, with the difference of WSS being wielded by Mihawk during Shanks' prime era for which we have no confirmation in manga for Roger and WB. Mihawk also never defeated Shanks, just like WB never defeated Roger but we know due to WSS that Mihawk is stronger and would emerge victorious IF they fought until the end. The same should apply to WB vs Roger.
All that aside, I believe that all 3 of the titles belong to Mihawk now as there is no man stronger than him nor a creature.
I think that is just a figure of speech. Or simply man in a sense of being male.
We know for a fact that Kaido isnt a human but an Oni and also WB wouldnt be WSM if Kaido was.
All belong to Mihawk, imo.
However, they will never be attached to him.
They will unify on Zoro though.