In X-Men Apocalypse, En Sabah Nur scouts four mutants to be the Horsemen of the Apocalypse.
When he first meets Storm he enhances her skills and the change is clear you can see her hair change color and her powers change from just small dust clouds to large storms, mist, lightning etc.
Then he meets Psylocke who at first has a small energy sword until En Sabah Nur enhances it making it longer and seemingly sharper/deadlier.
Through Psylocke he finds Arch-Angel/Angel of Death who is injured and seemingly weak. He goes through the biggest change as his wings become not only healed but enhanced to be metal which can be used as a projectile.
However when he meets Erik you can't clearly see his powers being enhanced. We saw Erik move entire football stadiums before X-Men Apocalypse, therefore this was just a demonstration of his powers because all he did was destroy a few buildings, which again he has done before.
My question is, what changes happened to Magneto's powers (how is it enhanced when we don't really see much changes)?
However if it wasn't enhanced, why wasn't it?