Petolucem said on twitter more than once that he belives Al Nusra controls 80% of rebel towns, which is crazy but he knows what kind of news his followers want to see. He is not an extremene pro-regime reporter like Leith Fadel for example but he understands that 80% of his readers are pro-government oriented, and they want that "Syrian army vs Al Qaeda" scenario, that's the reason they hate other rebel groups, mostly because the world needs no reason to hate ISIS or Al Nusra, but every other group seems to have some kind of a "OK" reputation.