I download the .docx file found at < http://download.microsoft.com/documents/customerevidence/Files/710000003670/Xiamen_Tungsten_Group_unifies_enterprise.docx > and opened it in LibO and the paragraph spacing was off when comparing it to word 2010. This was tested on 4.2 and 4.3. Tested 4.1 and 4.0 and they had more spacing than they should have.
Created attachment 98012 [details]
paragraph spacing of word 2010 vs libO 4.2
Reproducible, tested using Windows 8.1 with LibreOffice Version: 188.8.131.52.alpha1+
Build ID: f4a6837025a293312cbc43b9c527851362f11030
TinderBox: Win-x86@47-TDF, Branch:MASTER, Time: 2014-04-26_09:21:18
*** Bug 77965 has been marked as a duplicate of this bug. ***
Created attachment 106848 [details]
Pdf export of page 1 on 4.4.0 alpha (correct spacing)
I think it's spot on now, please see for yourself.
Build ID: 0a32edcdc2bda75a7536ce7f88c91cbc56e7afb1
TinderBox: Win-x86@39, Branch:master, Time: 2014-09-24_00:45:04
Comparing your pdf to my screenshot, you can see that now the paragraphs have more line spacing than they should.
Created attachment 111907 [details]
Presently the only difference i can see is the first line has above and below paragraph spacing of auto in MS Word and its 14pt above and below on LibO 4.5 2015-01-04.
Looks to me that LO 184.108.40.206.alpha0+ 2015-01-19 sets the same spacing as LO 220.127.116.11, while LO 18.104.22.168 is different. Strange because 4.4.0 seems fine. I cannot verify with MS because it's showing points.
Paragraph - title: LO 22.214.171.124: above 0,49 cm, below 0,49 cm; LO 126.96.36.199: above 0,90 cm, below 0,90 cm; LO 188.8.131.52.alpha0+ 2015-01-19: above 0,49 cm, below 0,49 cm
Created attachment 119138 [details]
paragraph spacing of word 2010 vs libO 5.0
LO 5.0, similar to 4.4, opens the document fine.
There's only slight difference with the image spacing, but that's another issue.
The spacing between paragraphs is still off, but believe its due to the empty space found at the top of the document (bug 112745).