To my eye, Tang has a preset that he uses that creates some sort of a look that he (and his clients) like, which does awful things to the upper tones. In the cited thread, he's made her dress look weirdly dingy while at the same time losing detail in, as noted, #3. While it's possible that would have been impossible to recover, I find it at least reasonable that he could have brought back a touch of texture. The attentive eye will note that the flowers on the dress are, while not featureless white blobs, consistently blown out to a substantial degree.
I base my overall judgement of Tang on somewhat sloppier work he's done:
http://www.jamestangphotography.com/a-dreamy-forest-wedding-inspiration-shoot-at-skypark-santas-village-james-tang-photography/is a maze of blown out everythings. The white roses are rendered as featureless blobs of white for no particular reason, over and over, the dress is ruined in almost every shot. The detail shot of the rose on the wooden background blows the rose apart for no apparent reason.
While it's possible that the photos shown on that forum are necessarily that way, he's got a track record of consistently failing to manage his highlights in anything like a reasonable way, so when I see yet more blown highlights, and more crummy looking upper-mids, I am going to cry foul and say "crappy preset" rather than "aesthetic choice" or "technically impossible"
His attitude seems to boil down to "they pay me, so what else matters?"
