I thought they specifically discounted the planet chain pull and instead went with the more recent "benchpresses the weight of earth for three days straight" crud. And honestly, while I got the distinct impression they set the fight up a bit for superman to win, it was less out of bias and more out of "Seriously, look at their feats, the winner is as obvious as luke cage versus galactus" The first fight they grabbed various screen caps just to show their relative strength and speed, and superman was shown to be exponentially greater in every category barring possibly actual hand to hand combat skill. (Though they pointed out superman was not exactly a slouch there either) Then they threw in the "philosophy" later to explain why goku will never get strong enough to win.