The usual knee jerk reaction is that the man is trying to bring the Quran to the level of Hadith. What the man is saying that if you spend an effort to study seemingly difficult verses of the Quran, then why don't you do the same for Hadith??
I think the proper way to handle such people is to admit, there are verses in the Quran that some times need reinterpretation and/or not to be taken literally. The issue with Hadith is that it is not Allah's Word, it has different grades of ahadith, it does not enjoys protection of preservation by Allah, you admit there are, even in Bukhari some doubtful material, unlike Quran it has trains of transmission, no verse of the Quran ends with "he said that or something to the effect" so there is no sense trying to deal with seemingly objectionable ahadith by doing taweeel because it is not Allah's Word !!