Tan is more honest ...Gau did everything by thinking abt game point of view and Camera ...She knew it will look bad if she will bitch abt other ,So she does everything indirectly , she is expert in lying ,She herself admitted in WKW that she is short tempered and says bitchy things in anger , she don't want this in front of camera ,so she controlled herself ...She did not show her real self, very manipulative and bitchy girl
And Gau dont have anything to say abt Tan Bcoz tan never bullied her , Gau bullied Tan and used bad language with her ,So tan had more point to say ,Gau did not had