Very nice that first one, and interesting how it relates to Echi's post below re: sharpness. I have my doubts about it and think that sharpness applies to maybe some genres (macro?-maybe not even. Commercial-product, yes) but not all, and street photography is not one of them. I guess you want to see people moving in street photography while the buildings stay static, like in your first picture. However, I think that one of the great contributions of modern architecture to cities, with the glass buildings, are the reflections, and I don't remember reading any architectural articles on the matter although I'm sure there must be some. The buildings are static, but the reflections aren't.
Think about the traditional historic city where glass was not used. Modern cities are sometimes referred to as claustrophobic, but reflections give it it a lightness at the same time, and the "landscape" on the glass is always changing. Like a movie playing while one walks.