In my eyes, it's the same as with any other comic. E.g. there are many different universes in Marvel and DC comics, so there are many different Batmans, Spidermans, Flashes, etc. It's all a matter of perspective. The characters can be identical or the same, but the actual content of the comics does not, in any way, reflect that of the show. It's still canon, yes, but it's not the same canon as show stuff.