They seem to have 'won' their category through being mis-categorized as 'Internet and Social Media', where they compete against Facebook and Twitter.
In terms of software vendors, they are outranked by most of the big names - only Google aren't mentioned.
Ranking behind that long list of companies, and only having to beat Twitter and Facebook on privacy issues is not a big win.
Edit: Also the source of this survey is very vague. It looks like a lobby/industry group who do nothing but put out surveys. No transparency on who the people behind it are, who makes up the board or how they are funded. From the website[1]:
Members of the RIM Council represent a cross-section of Fortune 500 companies and are champions of privacy and data protection in their organizations.
Interesting. So which companies exactly[2]?
RIM Council activities operate under strict confidentiality. Sponsorship revenues from participating Council companies provide funding for our core activities
Oh, right.