Superman was aware what happened, he even got the 1st hit in, just because it was surprising the astro force could knock him out does not mean that orion cheap shotted him.
And you continue to ignore the fact that they have been stated to be equals:
http://static.comicvine.com/uploads/original/7/72524/1486546-superman_vs_orion.jpg
I have to go for now but i will respond to you later.
The scan of superman getting knocked out is only to support the scan stating that they are equal, showing that it is not the only time they have been shown to be on par with one another.