Wayde, no I wouldn't say it was like that episode of JL. 

I think the story kind of highlights (maybe not intentionally, maybe intentionally) the difference between this generation and of the generation of kids when Supergirl/Kara first arrived on earth.  Supergirl served the role of the cynical reader when seeing Kara and responding to her actions.  But it wasn't like a Mad Magazine slam.  Supergirl saw her as a "out of time" naive girl who she came to love and there was a certain amount of "eye-rolling" on her part,.  Then when it came clear that she needed to "die", the modern Supergirl tried to take her place.  Ultimately, the cynic/realist opened her eyes.

I would say that in a way it was closer to "Captain America coming from a simplier time" compared with the cynical and ultra-realistic view of today.

Mark Haslett, strangely enough, a seemingly less-powerful Superman in1978 was NOT too vain to admit that he needed considerable help just to move the MOON:

(Boy, I sure hope this image shows up!)

Kip's further explanation of my early post is totally correct.  I didn't want to go into detail on it at the time, but Linda does explain to Kara that moving the Earth would result in changes to weather, tidal waves among other things.

I just found this.... Superboy was even stronger than Superman and he didn't give a shit about orbits, air or anything!