graeme_p - 7:22 am on Jul 26, 2013 (gmt 0)
Never needed to open an Access database, but in the last 10 years I have been able to open every PowerPoint presentation I have got, every Word document, and only one spreadsheet has failed. That said I do not spend much time in an office suite any more.
There can be problems with exact formatting - but you used to get significant problems between different versions of MS Word (not sure if new formats have improved that or not). Most of all, from what I have read iWork is worse than Libre Office from this point of view so I am not sure why he thinks