You watch much of Basel and Switzerland?
As for his record at Bayern, I wouldn't make judgments based on numbers alone. Playing for one of the most dominant Bayern sides ever is going to give you opportunities. Tello managed 8 goals for Barca a couple seasons ago - some cracking finishes amongst them but it only tells a small part of the story.
Perhaps I'm overrating Sterling here but for me he's near enough got it all - pace, strength, technique and intelligence. By the age of 19 he'd played a key role in a title challenging side and showed that he can excel on either wing and of all positions, no.10.
For me, Shaqiri needs to be a bona fide superstar to be easily better than Sterling right now.