is ”as such” identical to ”in itself” ?

as such = in itself
http://dictionary.reference.com/browse/as such
解釋28:
in itself or in themselves: The position, as such, does not appeal to him, but the salary is a lure.
這職位本身對他並不吸引,　但其薪酬就最為吸引。
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1)　一般此phrase 係放置於subject 後面。
2)　它的作用是加強句子的意思。
3)　它是一個 parenthetical phrase (加插式的短句), 所以要用comma 前後包住佢。
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所以你的句子最好重冩為:
The new job, as such, is not a promotion but it brings good prospect for the future.
The new job, in itself, is not a promotion but it brings good prospect for the future.

圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_1.gif


2008-09-15 03:51:42 補充：
parenthetical expression

http://iws.ccccd.edu/jmiller/A%20Brief_%20No-Nonsense%20Guide%20to%20Comma%20Usage.htm (最尾部份)

e.g.
Contrast phrases ("not" phrases): I like margarine, not butter, on my toast.