Disagree. He is a solid, physically very strong, committed and mobile full back with quality delivery on his left foot. Defensively he rarely gets beaten, stops more crosses than he doesn't and has made some pretty critical blocks of late.
If we use Bruno as comparison then obviously it's a pointless discussion, as Bruno is such a cultured footballer whereas Bong is a bit 'rough around the edges'. That said he does have certain attributes over Bruno and indeed over Rosenior. For all of Bruno's quality, correct me if i'm wrong, he is yet to chalk up an assist this season? Whereas Bong, from memory must have a handful.
He has not misplaced passes as you describe unless you count long balls down the left which haven't paid off. His primary weakness is being pressed and caught in possession and being forced inside on his right foot, which teams have identified, often with 2 forward players closing him down and limiting his options very quickly. This is not a slight on the player, they just know if they do that to Bruno he can play his way out of it. This often results in Bong playing it safe by passing back to LD/DS and cue people calling him shit.
I love Liam Rosenior, he's a quality all-round footballer and his professionalism is really something to admire, but to describe him as a shoo-in for Bong is just bollocks and i'm almost entirely certain that CH rates Bong very highly based on his physicality alone.
You make a very good case, so fair play.
I'm absolutely no harsh critic of Bong - I think he's decent. this discussion has come from me describing his form as 'patchy of late'. I think that's pretty fair. Very good in patches - second half v Fulham, Pretty ropey in patches - first half v Villa. But whether it be via careless passes, or as you say, getting caught in possession, he DOES give the ball away more often than I would like, so in my opinion, Rosenior would take the spot, if fit.
(Which he isn't, so its a rather moot point!)