@claymore1998: I take your point about Darkseid making the comment and normally i would not trust it. However telepathic feats are few and far between for him. By the way, I'm here for discussion not for debate, so please dial down the aggression as I'm not interested in proving the point right or wrong.
@koshi_waza88: this is an old argument. If a character holds a chain (as Superman has in the past) or simply pushed again an object, he would still need to be strong enough to hold the chain or resist the force applied by the object he pushes even if he applies any force in either example from his flight power.
He obviously did not apply any flight power while holding the equivalent weight of the Earth (in a simulated test).