@butterflykyss: He doesn't seem to be restraining himself but even if he's holding back, Colossus is class 100 strength so him only using 1% of his strength is still the force of at least one ton. Also, Magneto is obviously not 100% and is definitely weakened. That is a level of durability Storm has never showed.
Yea I am thinking he has a shield of some sort around him. That is his power shielding him and not him being durable. I think you are reaching here my friend. do you have more scans of him duking it out with a class 100 strength opponent?