Well Sasuke is a bigger fail because:
-he just saw Madara soloing The God of Shinobi Hashirama
-he knew that Madara stole Hashi's SM, making him even stronger
-He just fought SM Kabuto so he should have a general thought about SM sensing abilities
-he just saw Tobirama, one of the fastest shinobi getting owned by Madara, saw that Tobirama's sneak attack from behind didnt work, the same Tobirama who made Sasuke shit his pants in the Uchiha shrine...
-he got Hashi's jutsu to stop Madara from using SM
-he just went behind Madara hoping he wont sense him, lol
-he just threw a sword at him, while in their prior fight he pierced Madara's hand and he didn't give a shit about it,
-surprised that he was frozen while knowing nothing about Madara's Rinnegan powers (but at least he should have seen how bijuus were soloed by Rinbo Hengoku)
Naruto's defeat was hardly embarassing. All of the bijuus were KO'ed by some technique that exists only because plot demands it. With all Nagato's Rinnegan mastery you think he wouldnt know about this sealing technique? Nor Obito, who got all his knowledge from Madara himself?
Plot must have been advanced this way, because Juubi must be reborn, Naruto must loose Kurama, and noone would wait at least 3 days for each bijuu to be sealed, or even longer because this was with full Akatsuki squad.
Also, the fight bijuus vs Madara was also haxxed but this is another story of blind Susannoos and stuff. If it werent haxxed then they wouldnt be sealed.