The quoted post is the 6th reply on the subject. I guess it's not a clean cut, but I'd say it would leave me biased towards saying bobR is not a troll, but rather a troll wannabe still in training.
You see, I'd expect a real troll to step in by the 3rd reply, at most. Still, the verbosity of the above quote still counts towards a good effort... keep trying, young grasshopper, you too shall get there!