What if Krypton existed

What if Krypton existed for real and not exploded like in first "Superman" movie,more like in "Superman Returns" where two thirds is still there.If Kal-el did get rocket shipped here and has all powers as in "Smallville" even able to fly,due to our yellow sun.Now what if one of us were to go to whats left of Krypton and acquire same powers and abilities due to their red sun?We could return to earth,but keep those powers/abilities without disadvantages or weaknesses.