Shredder. Samurai was bigger, but Logan was physically tussling with him and he's nowhere near the Turtles in anyway physically. Strength, Durability, Speed, Agility, Skill, Range. They've all got him beat and Shredder beat them like stepchildren. Even with his heated Adamantium, Shredder wrecks him. He probably takes his sword and uses it on him.
Even if he took his swords though he would have no way to heat them to hurt him. Aside from stealing his weapons how would he put SS down since throwing him off a cliff is not an option here.
His armor isn't made of Adamantium. Only the swords are. And he can heat them. All you need is a double handed grip. Logan got the blade to activate just fine.
Also Harada's arrow pierced his helmet if only barely. Shredder's blades would do some damage.
Nope. Just the blades. And even if it was, as I pointed out Shredder can use the swords just as easily as Logan...probably with more ease as he's a martial arts master unlike how Logan is portrayed in the movies. So he'd just take the swords and run him through or something.
Was it actually stated anywhere? If it was cool. My point still stands that Shredder is shown to be stronger, faster, more agile, blah blah blah, and can take the swords and use them for his own.
That was one of the film subplots, that Yashida almost bankrupted the company when he started stockpiling adamantium to later use into building his nigh-indestructible life-support suit.
Edit: It was stated, iirc. I also provided link to Marvel Movies wiki.
I know he built the swords, but I don't remember the armor being Adamantium. Just that it was for life support. And I saw the link. I was just asking since wiki's can be easily edited.
Like so
Joan River's wiki page after her death. (please log in to view the image)
I'm pretty sure they fixed it already. I was simply making a point. But as I said, I'll take Rob's word that the armor is legit, despite Harada's arrow piercing the helmet to the shaft.
Shredder is still physically superior and can get at least one sword away from him. Then it's over.
Because Logan physically overpowered the SS Armor several times throughout the fight and resisted it's strength. He's nowhere near as strong as the Turtles, who in turn are portrayed to be less powerful than Shredder.