They are BS calls. But us being shit is the main reason because not so long ago we were not even top 4 in the weak league Serie A is. We did bad in Europe. And we're struggling against Porto, not against Bayern and that itself is quite pathetic.
I get what you are saying but we can say something when there is a bad call against us. It isn't an excuse but one can hope only for the best its Juve after all.