You want to explain to me, that 100 years after the occupation of a nearly homogeneous territory the turks became majority in 1444?
You also want to explain to me that the christian greeks who was two fifths of vilayet aydin in 1919 weren't a majority in 1444?
The same reason places like Vojvodina and parts of the Banate of Temeşvar suddenly became Serbian at the end of the 17th Century: population flight. Western Anatolia was an anarchic warzone for large parts of the period 1260-1415. There was migration of Greek peasants out of unsafe areas, and the Turks moved in to take their place.
Maybe the "christian" greeks were not the majority, but it is very propably that the greeks "muslim and christian" were definitely the majority.
Also you need to consider, that most greeks convert to islam to avoid the devshire system.
Speculation. Also for the most part the devşirme wasn't applied in Anatolia, so I'm not sure what that has to do with it.
There was also christian greek cities that fall in 1390 such as philadelphia!
And Philadelphia may or may not have still been mostly Greek in 1444, but the bulk of the Anatolia population lived outside of the cities anyway so it wouldn't make that much of a difference in overall demographics.
Do you think that most greeks of asia minor died within one century and was replaced by ethnic turks?
Maybe you should read this: http://en.wikipedia.org/wiki/Greek_Muslims
No, I think they either fled the country or assimilated into the Turkish population. It would be great if EUIV's representation of population was more nuanced to also include those Greek Muslims, but it would be wrong to make any province in Western Anatolia Greek given the current system. Besides, ethnic identity wasn't terribly important in this era anyway. People who converted to Islam were considered part of the same group no matter what language they spoke. To the Muslims they were all part of the Islamic community, and to outsiders they were all 'Turks'. And huge numbers of modern Turks are indeed the descendants of these Greeks and other people who became Muslim in Ottoman times.