That's... kind of an ironic reason to prefer the girl who is literally changing who she is to cater to his tastes, isn't it? Just saying, neither of these girls is probably alright at the moment in that regard. If the voice actress is indeed a huge fake like I also suspect, that just means both girls need to start acting like themselves before he can honestly form an opinion about them. Assuming he chooses to do so at all at the time, he might still be clinging to his token excuse at the time.