Clanad, you quote Robert S Hogg et al and their 1995 paper - direct link here...
http://ije.oxfordjournals.org/content/26/3/657.abstract
Had you read it through you would have seen that the time period of this study was 1987-1992 in Canada.
And you may have missed this comment from the authors of the paper in 2001:
"Over the past few months we have learnt of a number of reports regarding a paper we published in the International Journal of Epidemiology on the gay and bisexual life expectancy in Vancouver in the late 1980s and early 1990s. From these reports it appears that our research is being used by select groups in US and Finland to suggest that gay and bisexual men live an unhealthy lifestyle that is destructive to themselves and to others. These homophobic groups appear more interested in restricting the human rights of gay and bisexuals rather than promoting their health and well being......
In contrast, if we were to repeat this analysis today the life expectancy of gay and bisexual men would be greatly improved. Deaths from HIV infection have declined dramatically in this population since 1996. As we have previously reported there has been a threefold decrease in mortality in Vancouver as well as in other parts of British Columbia"
The reduction in mortality would be even more marked now -14 years later.
http://ije.oxfordjournals.org/content/30/6/1499.full
I may have time to look at the rest of your links tomorrow - most of them aren't live unfortunately.