I don't remember him asking for opinions on what a Nikon shooter thought was "more professional."
I don't know about the OP, but when I post a question like this, I sometimes like to get answers like this, that make me think outside of my original question. I don't always just want the most literal answer.
It is not classy to put other members down, especially when they're just trying to help. By all means, point out if you think they're wrong and why, but remember how you like to be spoken to.
No one (at least no one I'd want to be associated with) thinks you're cool because you make yourself feel better by putting others down or trying to minimize their opinons. It is just classic inferiority complex.
You also might take note of where a person is from before ripping into their word choice. If he is in Malaysia, it is quite possible that English is not his first language.