They learn the same moves (bar move tutor moves), and they have the same stats. so whats the difference?
One knows Secret Sword, the original cant know it without transforming into the Resolution form.
Normal keldeo doesn't have secret sword, and is allowed in PWT and battle subway, but the resolution form looks like my little pony gone wild and has secret sword:100 power,100 accuracy, and does physical damage, and only transforms in bw2