How does Ay III not have portrayal? Naruto likened his speed to that of Ay IV when the clashed and even Ay IV said the sharingan was no match for his speed, when he was in V1. Thats portrayal there that his speed can be a good counter to 3 tomoe genjutsu.
Ay wasn't KO because he was still conscious while under the Genjutsu otherwise he would have never known he was caught in one and that was an EMS one, far above a 3 tomoe level. Deidara wasn't even aware of Sharingan visual prowess. Narutos chakra control sucked at that point, which is what breaking genjutsu is all about. He was still forming Rasengans with a clones then. Orochimaru wasn't KO'd either he just didn't break it fast enough. His hype is that he is the Raikage and has had to face genjutsu before. Why would anyone with zero skill or knowledge in genjutsu even be a Kage? It makes no sense.
If you stick to this you also have to acknowledge that Madara or Sasuke will get solo'd by a "simple genjutsu" in base because they have no hype or feats to resisting it without Sharingan. Do you really believe that because I sure don't?
And still SM Naruto reacted to him just fine. With Kakashi's, Hebi Sasuke's and Itachi's speed feats plus sharingan precog they certainly won't be dancing circles around the Raikage, but they can atleast react to him long enough for a genjutsu to land.
Again, I'm not saying that because he has zero feats in genjutsu that he would be soloed by any form of genjutsu. Sharingan genjutsu, specially Itachi's sharingan genjutsu was shown to defeat top tiers before. So being defeated by said genjutsus won't make him "weak".
Another thing: It was never stated that the level of the eye itself that made a genjutsu stronger, unless that the jutsu changed (examples: Tsukuyomi for Itachi's MS, Rinnegan genjutsus for Sasuke's). So unless proven otherwise these were all sharingan genjutsu.
Whitout Sharingan by a genjutsu master like Itachi? Definitly! If the genjutsu managed to land (witch probably couldn't due to their overwhelming speed but is doable with the Third) and whitout Sharingan they would probably be caught. But since they have Sharingan, that posess the hype to be resistant against visual genjutsu, they probably would not.