i can verify for a fact that using that link downloads 4.5.0.whatever. the softpedia link does link to 4.6, but using the google cache link is a copy of the softpedia page that had a link to 4.5. most sites like that tend to keep old versions of software they are offering for downloading; googles cache of the old page includes to the link to 4.5 in it, and it downloads 4.5.
the link you provided links to the current version of the page on softpedias site, and that page links to 4.6
the old version of the page, stored on googles server, has the link to 4.5