You forgot Armor. I'd imagine at full strength, Legion would have the edge. Maybe Cable if he weren't dealing with the technovirus. Magneto's powers wax and wane so much, there's no telling. Storm has a shield power?
Yes, She does have a shield she came a air pressure dome that can punch through mountains, and make a lightning field that can protect her from tk.
"well you see this guy "sage of the six paths" was the first shinobi of the world who invented ninjutsu and all the other types of jutsus....he was incredibly strong...he had two sons...the elder son possesssed perfect eyes of the sage and the second son possessed the perfect body of the sage....from the first son originated the uchiha clan(eye=sharingan) and from the younger son originated the senju clan...when i say a perfect body i mean immense physical strength....lady tsunade is a senju too thats why she has super human strength.....also because the senju have immense amount of chakra they are good healers(medical ninjas).naruto's clan(uzumaki) was originally descended from the senju clan too."
and for base look at the Sannin fight she was fighting with her pure strength and at the end she enhanced it.
@hiddenlight: Indra inherited his father's eyes (Sharingan), his genes for powerful chakra, and his spiritual energy, so the Uchiha got this. Asura inherited his father's body his powerful life force, and his physical energy. The physical energy means strength something that is genetically given to Tsunade on both sides. Because of her great chakra control she's able boost both her monstrous strength to greater level. Sakura hit the juubis hard because she was at full capacity of chakra. Tsunade could hit it with out with out chakra like she was doing to Madara defenses. Btw the 2nd was barely touching the wall and it began to break.
@hiddenlight: Asura inherited Life force and Physical energy from his father. Asura clan the Senju and Uzumaki also gain that too. She is able to add more striking to her already nature strength because of chakra control. We have only seen Tsunade smash the ground with pure physical strength not enhanced with chakra, so that feat is debatable. And BTW both the 1st and 2nd have super strength that could outmatch Sakura.