205 seems to be a good weight for him, at 185 he had trouble making weight and had to do a catch weight at 197 against Belfort and 195 in his following fight, because he couldn't get down to the MW limit. He walks around 235lbs
I don't really understand your point, i already said 205 is a great weight for him.
But I'll indulge, look at Johnson, it's an absolute disgrace and totally unprofessional on his part to get as high as 235lbs if he was intending to fight at 170lbs (even 185lbs).
The only reason he had a problem with making 185lbs is because he let himself get too big.