That's, again, silly.
EMIYA has the stats to throw down with Herakles for a few dozen blows dude, Shirou was approaching the level of EMIYA.
We know he can trade with people in her strength tier, nothing is inconsistent about that otherwise incredibly brief exchange.
Artoria didn't have a choice vs Medusa, Medusa was playing cat and mouse while Shirou fought her head on like an idiot because that's all he could do. Her chastising him about dueling rather than trying to win is not an indication she held back her physical might.
Sparks Liner High Here, Shirou informs us he's not only projected Kanshou and Bakuya, but also reproduced EMIYA's battle experience with them thus making Shirou's own abilities now close to EMIYA's.
Here, Shirou removes the Shroud of Martin, projects Kanshou and Bakuya, and his reasoning for not trying to project his own copy of Excalibur Morgan to fight Artoria Alter.
Here, Shirou charges Artoria Alter from 10 meters away and attacks with Bakuya. Shirou attacks with Kanshou, Artoria Alter defends and readies a counterattack to Shirou's throat. Shirou blocks Artoria Alter's counterattack much to Artoria Alter's surprise. Shirou continues defending against Artoria Alter's attacks.
Here, Shirou defends against another attack from Artoria Alter, that's all he can do, he's already blocked 30 attacks that could have killed him.
Here, Shirou deflects more attacks from Artoria Alter, he perceives his death occurring 30 steps ahead through EMIYA's True Eye of Mind skill. Shirou defends against another attack, he feels joy at being able to keep up with Artoria Alter.
Here, Shirou defends against another blow, he muses about why Artoria Alter won't attack with her Noble Phantasm and only fights him using her sword technique. They continue to exchange, Shirou's speed increases as he digs deeper into EMIYA's arm to extract more.
Here, Artoria Alter's last attack is also blocked, but the force sends Shirou backwards, Artoria Alter grunts from exertion.
Here, EMIYA's True Eye of Mind skill tells Shirou he can block 5 more attacks from Artoria Alter. Shirou points out he's keeping up with Artoria Alter, Artoria reminds him to check his definition of keep up given the condition he's putting his body into for him to achieve this current feat (she knows he's at his limit and will defeat him in their next exchange).
Here, Shirou is unarmed, Artoria Alter charges Shirou. Shirou charges Artoria Alter, projects another copy of Kanshou and Bakuya, and blocks Artoria Alter's attack.
Here, Shirou goes to project Kanshou and Bakuya again, the remaining 10% of his mind vanishes. Shirou passes his limit, his circuit filled to bursting with magical energy, and projects his final copy of Kanshou and Bakuya. Shirou slashes Artoria Alter's defenseless body from both sides with his final projections.
Here, Shirou's last attack from Artoria Alter's perspective, Shirou's attack crushed her spine and splattered her internal organs. The attack is fatal. Shirou's final attack had the force of an explosion, she's only still alive due to her nature as a Servant despite her fatal wounds.
Here, the Tiger Dojo reinforces the fact Shirou did indeed defeat Artoria Alter with no allusion to her tanking it on purpose.
Like, I broke it down, keeping it to the description of the events as closely as I can to not confound the information. It's not that hard to follow.
EDIT - Of fucking course they're gfycat links. Have to upload what I diced up to the google drive then.