about the sky I think this will clarify things. That's how I understand it. Right and left should have the same total magnitude

Attachment 61376
10 stars with 0,1 magnitude and 1 star with 1 magnitude but on a linear scale so if you combine all the stars, you obtain that total magnitude. But since they use a logarithmic scale, faint stars contribute very little to the grand total and most stars are faint.

As said before I think, the light received by the star is only a bit brighter than the wold sky at night. It only means that it would be a little easier to see at night for humans at least . But the moon will probably outshine the star most of the time.