why does XBOX hate +R's

i was backing up all my xbox games because i have a couple of them that are RARE and i can not get em anymore such as Kakuto Chojin / GTA san andres version 1 / and gunvalkrie for sum odd reason my XBOX will not read a +R it will read +R DL i have tryed every +R under the sun and still nothing - try a -R works fine any solutions on this matter sinse everyone is saying that +R is way better

 

So whats the problem? If the -R work fine, keep using them.

And use the +R for movies.

 

nuttin i just had a friend give me a couple of games to borrow and they wer one +R could get em to work and then i burned one on -R by Accsodent and it worked im just woundering why xbox system does not like +R media that all