His version of Iron Fist is totally different than the one we can read in the comics.
Shari's Iron Fist is able to:
1) Shrugg-off Nukes: wich weren't and he just passed through a train full of explosives as he was moving as an human-bullet through the train
2) One-shot anyone because he sunk an Hellcarrier that he didn't destroy.
3) Absorb the Chi of anyone despite the story making it clear that Davos & Danny absorbs the Chi from Shou-Lao thanks to the Scar on their chest, which originate from Shou-Lao's trial, and they can steal it to each other only via those marks and not to everyone
4) Become a Ghost when he dies and come back to life despite the story making it clear that Danny died in another dimension then was brought on Earth via the Soulgem, then temporarily solidified his form, then needed the Soulgem to come back to life or finally disappear.
5) Is faster than anyone because he limbo dodged a few bullets.
6) Fight faster than anyone because he hit multiple times a giant as active as a brick wall whom even let him do his complete Kung-Fu dance without reacting at all, let him his foot which took him off-balance and hit again and again in the same situation.
In the end, we have someone whom manifest an extreme fanboyism for the character and can't believe his favourite hero to lose to anyone on a battle forum.