
Br occupies stable allylic position in case of NBS
thats wrong...its only the minor product !
the major product should be 
but why benzyl free radical is stable naaa ...........but it can be a exception as chemistry itself is an exception!!!!!!

wo MR.organic..u r wrong!!! the free radical in ur product is cross conjugated.....but in mine it has full conjugation so mine product is stabler!!:)