Asalamwalaikum, Game Theory - I think it would be very fair to say that Tariq Ramadhan is a western academic scholar. Like you say, after all he has attained the rank of professor (and has done so at numerous institutions). Islamically however, where has he learnt his knowledge? Is he a scholar in the sense that he can be considered a 'Shaykh', a member of the 'ulema' or someone senior enough to issue a fatwa? I think not and he would agree with that assessment also. Regarding Nouman Ali Khan - He is a very humble brother who gets genuinely annoyed if he is called either a scholar or a shaykh. As an Arabic Grammarian though, and as an Arabic linguist, his credentials are impeccable. It is from this he approaches the Quran. I think he is doing incredible work in making the Quran accessible to muslims in the US and his company Bayyinah are alhumdullilah doing quite well. For someone not familiar with NAK, I think this lecture is absolutely superb. http://www.youtube.com/watch?v=yfflgF_H0kY - In this he explains that the Quran is a linguistic miracle and it is hugely beneficial for us to learn Arabic to appreciate this miracle.