In order to win the appeal we have to disatisfy both conditions in IRPR Subsection 4(1)
Bad faith
4 (1) For the purposes of these Regulations, a foreign national shall not be considered a spouse, a common-law partner or a conjugal partner of a person if the marriage, common-law partnership or conjugal partnership
(a) was entered into primarily for the purpose of acquiring any status or privilege under the Act; or
(b) is not genuine.
mrsrangi already said that they believe her marriage is genuine, so she had already pass subsection 4(1)(b), the IAD member or judge right now is just evaluating if there is any immigration motive to gain privilege for her husband to come to Canada, which in my opinion is easy to pass.