yer id probly also say that it isnt non-canon, most of the events that happen can be incorperated into the actuall story. It all kinda fits togethor
The timeline of the game also probly is another factor into the game being canon.
It was set like right in between the sequals and prequals.Perfect timing if you ask me.
and the downloadable content ....meh it could be canon IF the sith had one but oviously no because they didnt.