I share the following as a senior manager who has organized and sat thru a huge number of focus groups concerning various marketing issues during my career .

Focus Groups should only be used to give a management team a " general direction " concerning any issue but not as a definitive survey . It`s often incorrect to project the feedback from a Focus Group as indicative of the market as a whole .
Reason being -- they are usually made up of no more than 20 people and the open discussion more than influences the vote of the group on any question .