Brown wasn't much taller but out weighed Wilson by 80 pounds at 290 pds. Brown by weight looks much beefier. And the Hulk Hogan description would fit. 210 pounder trying to control a 290 pounder from a seated position would be awkward to say the least regardless of any training(street fights are not in a ring/controlled conditions). I think during the initial scuffle after the gun was fired for the first time tripped both combatant's andrenal glands with both already agitated/in combat mode. The forensic evidence seems to tell the most including a 20 ft trail of blood from where Brown was first hit heading toward Officer Wilson. The "demon" word was a poor choice but I would assume there are many other words he really wanted to use.
The thing with the cigar/arrest of suburban kids-around here in many police departments just asking a police officer a question is considered a wtf act so reaching into a policeman's car is all but a death sentence which is basically accepted. Think about the scenario and not race. True, any police department should have a policy where non lethal force is the primary tool to subdue someone but there are some lines you simply don't cross and most seem to know what they are.
Things do change, that's one thing I've known to be true.