Just because the trauma is there doesn't mean the trauma is the same. It definitely had an effect on him, but to say that its the same as what Seven went through is ridiculous.
Good but I have to say Borg was who she was through and through. Picard was established before assimilation and fought them every step.("sleep data sleep").
Because at the point that this episode occurred, Hugh wasn't really an ex-Borg yet. He wasn't part of the overall Borg collective, but he was part of the rogue Borg, and whether or not he was fully an individual read probably still up for debate.