what is the second column in that table?
what is the difference between first and second row on that table?
No one here works for CIC so no one can say for sure whether they check it against the table or not. According to the rules, all it matters is that a person get 67 points but there is a clause that allows for officers to decline PR even if someone makes 67 points if they feel the applicant doesn't have the ability to establish themselves economically.
There was one person who was asked to explain his adaptability points for relatives and was told that his IELTS score was too low for his profession. However (i think, but i could be wrong), once he established his adaptability points again, and told reasoning why he will improve his english once in Canada, they didnt ask for a higher language score.
if you have all poor for language score,then it is advisable to get higher points but if this means delaying your application, then that is a risk that you should be willing to decide on. You could always apply to CIO and then do another IELTS test in the mean time. If CIO accepts your application, then you can strengthen it through a higher IELTS score by the time you have to apply to visa office. If on the other hand, CIO declines your application, you will be ready to send in a new one with a new and higher IELTS score.