Many foreign teachers of English are teaching nothing but oral English here in China. Naturally, the accent and fluency of a foreign teacher, as well as his grammar are important considerations for his (or her) potential employer.
In my experience, top of the class for standard pronunciation are Canadians. Generally, they speak very clearly. As for their grammar, it is the best. You know, the Canadian education system equips them very well in that respect. I'm not just saying that because I am a Canadian who has been appointed as a Director of Studies by my Chinese employer. I should add that I think East Coast Americans and Alaskans also have good pronuciation, as do the English. All of them speak fluent English that is grammatically correct, too. That is why all those native speakers I have listed above are in great demand here, and tend to earn higher salaries than foreign teachers from elsewhere in the world. Those are the indisputable facts.
More about me, I have taught senior middle school here for more years than I care to remember, so I know what I'm talking about.
The poster I'm replying to has the username 'All Are Equal', but nothing is farther from the truth in the EFL world regarding the teaching of oral English. Perhaps the main reason one shouldn't trust entirely what that poster has written is that the grammar and spelling of his post are both rather poor, all be it he is deemed qualified enough to teach EFL here by the Chinese!