There is much more to a great BBBJ than deep throating.
The DT is just one of many things that can make a great BBBJ, and for me personally it's a relatively unimportant one - it really doesn't do much for me.
Every guy is gonna have different views as to what constitutes a great BBBJ and what's important.
Fast, slow, hands, no hands, spitting, dirty talk, tender and gentle, tongue flicking, deep throat, ball licking/swallowing, shaft licking, slow teasing build up, CIM, cum play, variations in speed and technique, eye contact, slurping, mouth/hand coordination etc etc ....
Also depends on the girl and the mood you are in.
Sometimes a slow tender GFE style BBBJ is perfect, sometimes a fast, dirty talking BBBJ is perfect.
The vibe girl puts out is important too. And then there's the visual aspect - watching a gorgeous girl giving you BBBJ is hotter than watching an average looking one doing it.