What I quoted is actually from the EA Battlefront II of 2015, not the Pandemic Studios Battlefront II of 2005, meaning it is actually part of the non-tiered, unified Disney canon managed by the Lucasfilm Story Group. If you want to go solely off Legends continuity that's fair enough, but that also takes away the Death Star Owner's Technical Manual which was in 2013, as well as the (alleged) Leland Chee Twitter statement that backs up Death Star Owner as an "un-retcon".There's literally a scientific definition of Stationary Orbit. As it turns out, it literally means a natural geostationary orbit at such and such an altitude. You might as well argue that they have a different meaning for the word "Kilometer."
What you're quoting was never canon at all. Star Wars, pre-Disney, had a strict canon hierarchy that allowed on to escape the silly contradiction games you're playing. At the top was the movies, Clone Wars, and their novelizations, then came "official" other books, comics, and at the bottom games. So the novelization would completely override anything from Star Wars Battlefront, much less a manual from it, if there was a contradiction.
A technical manual based on a game would be the lowest of the low and now with Disney throwing out the EU wholesale, not even that.
Actually, come to think of it -- if you put it all together, I would say it's entirely reasonable to take the split opinion that the up-to-date Disney Canon canonically puts the Death Stars back at 120 km and 160 km, while the unredacted EU/Legends Canon just as canonically has the Death Stars at 160 km and 900 km.