Two feats in observance.

I have watched MOS again times an observed the World Engine Feat and it is equal to Routh's Island Feat in every way maybe even a bit above it considering Cavil received no amp

Cavil was going up against Kryptonian Technology as well as the surrounding atmosphere was that of Kryptons and he battled it out with the formations of the world engine constructs.

They where un able to hurt him even in his weakened state. After they realized they could not hurt him they through him straight into the gravity beam thinking that was going to stop him.

Untold amounts of gravity where directly upon him, he was in a weakened state due to the terraforming. And thus when he focused his power he was able to create a force above what the gravity beam produced and destroy the world engine. No Sun Present..

Subsequently he also survived the singularity and his density and flight strength override the black whole as well.

Routh was in a similar situation but instead of the atmosphere making him weaker it was the kryponite. He got beat up but Lex and his thugs and stuck with kryponite and fell into the sea no sunlight present.

When they rescued him she pulled the major chunk out and what was left was a small sliver that the doctors later got and he regained his health.

After she pulled the kryponite out, he had to go receive direct sunlight to amp as shown, and there is no denying he is amping otherwise they would not have shown this scene or his strength retuning, thus he proceeds to go far under the crust and pull it out, he was under direct sunlight the whole lift as well being amp'd so as its shown the sun light overpowers the kryponite in his system and the island's radiation, otherwise he would not have been able to lift it at all.

Routh was amped before and was during whole feat and fought against his weakness and still completed the task he had to.

Cavil received no amp and and still fought against this weakness and complete the task he had to to save the earth the earth.

Tell me what you think is a greater feat based on what you have seen and what I have stated.