Yes, less time fighting. Giyu was going all out for a couple minutes in a serious battle before resting, but Obanai was fighting, running, and using his technique for the entire 5 hours straight. The fact Giyu had a more serious engagement left him more injured but doesn’t change the fact that he was fighting less and had time to regain his stamina.
Giyu fought Sanemi in a sparring session, rushed towards the Ubuyashiki mansion, fought NPC demons for an unknown period of time, then exhausted himself fighting Akaza (I don't know where you're getting 5 minutes from, the fight was clearly longer than other fights which presumably lasted for hours), and had actual injuries. He was indeed fighting more in the same period of time, and Obanai also most likely had time to rest considering Yushiro had to get to Nakime, take control of her, and manipulate her vision to fool Muzan and make him think that Nakime was still fighting Obanai and Mitsuri. We also don't know how much "rest" Giyu got, or how much Obanai was really fighting since literally the entire fight was off-screen.
Fatigue and injuries are two separate things.
Injuries make you fatigue faster. The more you're injured, the faster you get fatigued and the longer you take to recover.
Pre-13th Form non-TW Tanjiro. And Base Obanai fought the same Muzan seconds apart.
13th form Tanjiro was fighting a Muzan alone while in immense pain and rapidly losing steam, with Obanai only saving him after he couldn't connect the 12 forms anymore.
Obanai was finished by Muzan literally eating him after he sacrifices himself to save Tanjiro, after he recovered faster than Giyu from Muzan’s earlier attack. Nothing here supports Giyu.
Could never be Giyu btw
As already covered, 13th Form Tanjiro and Obanai were both in similar condition (arguably even worse for Obanai) and still performed as equals. There is no getting around this.
Absolutely not. The whole time Tanjiro was connecting the 12 forms,
he was moaning about how his organs were on fire, how his brain and heart were spinning, how his limbs felt like they were being torn off, how his blade was becoming duller while his muscles lost their strength, with Muzan himself commenting on how rapidly he's losing his strength. Tanjiro was very explicitly losing his strength while using the 13th form, and Obanai only swooped in when Tanjiro
lost his footing and
couldn't keep up anymore, and against a Muzan who just realized he was also rapidly losing his strength.
You just can't compare Obanai and 13th Form Tanjiro lmao
I’m not sure how. Giyu parried some strikes from Muzan from over a dozen meters away seconds before Obanai and Mitsrui arrived. Then seconds later Base Obanai engages Muzan at far closer range in synch with Giyu.
The same attacks that blitzed Tanjiro from several dozens of meters, while Obanai could fight in close range with support from Giyu and Mitsuri, and specifically a Giyu who didn't use Dead Calm or any other speed amping technique. He also isn't marked in the version I'm reading tho that could just be a coloring problem.
He said he needed a new surge of strength to unlock the Red Blade like Muichiro, not the Mark. Trying to use the fact Giyu broadcasts his emotions less despite also being backed into a corner against Akaza as some kind of gotcha to limit Obanai’s Mark as circumstantial despite all other Marks being unlocked in similar circumstances (bar Gyomei’s) doesn’t work.
Yes, and he unlocked a Mark after he says he needs to grip his sword with all of his power, implying the Mark is "all of his power" and that he couldn't turn the sword red without it. So the death amp does indeed seem to play a role in him unlocking his mark. And broadcasting his emotions has nothing to do with it. Giyu unlocks his mark after saying "I don't like swinging my sword to the best of my ability", and says his back hurts. That's clearly different than when he angrily yelled out that Akaza has to kill him in order to kill Tanjiro, or when he was pissed off when Ubuyashiki blew up. He's not hiding his emotions at all, his rage just has no connection to him unlocking the mark.
Gyutaro didn’t “blitz” Tengen, he hit him. Gyutaro even explicitly calls out the fact that Tengen parried a fatal hit.
Except Tengen still got hit because he failed to react fully, and Gyutaro went halfway across the room while Tengen couldn't swing his swords in time to prevent getting hit at all. That is a blitz, although a partial one.
Which can easily be explained by the artist not wanting to bother figuring out which pixels of the very side of his face they should colour in. Marks are constantly simplified or left out in far shots and disfavourable angles.
This is just reaching. The author never leaves out details like this when drawing close-ups of characters.