The best commentator teams have a back and forth style. JR would let King say his heel lines, then yell at him about it. King would wait for JR to finish saying something about how the heel was despicable before refuting the claim. The same goes for Gorilla and Heenan, and I am willing to bed, any of the best commentators in the business. JBL interrupts Cole or King after a few words. If JBL just waited a few seconds then started his heel rant, it would be fine.
It means the stories of the heels get told more often by the commentators, it means the faces struggle to have their story told. Honestly, what is Ziggler's story right now? What is Sheamus' story? I have no idea. These are faces who don't get promo time, which means it is the commentators job to get them over. We know Cena's current story because he gets promos, the same for Reigns (well his story is told through the heel promos of HHH and Orton), Ambrose and Brie Bella. What is AJ's story? Have the commentators told us anything outside of her being tormented by Paige?
I don't think its because JBL is terrible, he is okay, not great, but okay. They either need a face commentator who can yell as loud as JBL, is as passionate as JBL about wrestling, or tell JBL to tone it down. The first two are the better option, but the third one seems more likely.
King isn't as quick on his feet as he used to be, not sure if that is because he lost his passion or because he just doesn't work that well as a face. Michael Cole, he has always been boring as a play by play. I miss the commentators that knew and called the moves in the ring. I feel like I know more names of holds than Michael Cole does, there are so many times where he is like 'Well that is a unique looking hold' clearly having no idea what it is called.