I should have realized that the WSJ article would be behind a paywall...I just subscribed the other day...apologies.
But, yes, the article says that Petraeus turned him down, and I was surprised that he would have been offered the job for the reason you cite. i guess the Don didn't have our breadth of knowledge in world affairs & probably didn't know that Petraeus was still on double-secret probation...he is just a big name that Trump had heard of.
The Don has no respect for any of these guys since they are not wealthy and are just losers who have access to a collection of fancy uniforms. He'll probably end up with some stooge like Bolton or Giuliani, unless he gets lucky and this Kellogg guy can't think of a plausible reason to hit the eject button.
Maybe you think this all is no big deal, but I would bet you a nickle that the NATO Joint Chiefs have been burning up the (secure) phone lines to the Pentagon this week to find out WTF is going on after the events of the past week (starting with PM Abe's visit).
But here, in this sub-thread I posted another link...this one to the RCP polling avg. for Trump approval ratings, pertaining to you comment about Rasmussen.. No biggy.