I'll go with the man Jaime describee as being able to "fight with one hand while taking a piss with the other"
Jk jk with the overhype, but Dayne does carry more weight with his reknown than Daemon. Maybe if our series' setting was during the Blackfyre rebellion I'd lean on Daemon, but as things stand Dayne takes this duel with high difficulty though (no easy fights from now on)
Keep in mind, a lot of Dayne’s hype is due to the fact that he lived recently and was also a superb example of a chivalrous knight. He wasn’t just a great swordsman but he was also kind to the small folk and well liked.
Aight I’m about to be that guy. I’m about to explain to everyone up in here why Daemon Blackfyre is the man to kick out Arthur Dayne.
So Daemon is one of the most insane Targaryen warriors of all time if not straight up the most insane. He was a huge and strong man similar to Maegor, he wielded Blackfyre just like Maegor, and his sheer hype is batshit insane.
One of Daemon’s loyalists said he was “the warrior himself” when wielding Blackfyre (the warrior is the ASOIAF God of War), and also stated that Daemon was a superior warrior to Aemon the Dragon Knight, who lived in the same era as Daemon so this is a pretty reliable quote.
Daemon fought the greatest dual in the history of Westeros with Gwayne Corbray of the Kingsguard, who was wielding a Valyrian Steel blade. Daemon was also a vanguard warrior who personally (along with his men) shattered the front lines of an Arryn’s vanguard formation.
So Daemon Blackfyre was called “the Warrior himself”, was said to be a superior warrior to Aemon the Dragon Knight, and fought (and won) the greatest dual of all time.
Now Arthur is superb, but the main reason I think Arthur is objectively inferior to Daemon is that we know that Arthur fought against Prince Rhaegar in tournaments numerous times. Which to me implies he was not consistently defeating Rhaegar.
Rhaegar is a superb warrior, but he in no way has the sheer hype of Daemon Blackfyre. No way, no how. Let’s pull a huge upset and kick Arthur Dayne out!!!