While unnamed, Evil Avatar claims the "reputable" marketing group serves the interests of Microsoft (among other companies).
The survey also included this somewhat relevant question: "On a scale of 0-100, with zero being not at all satisfied and 100 being very satisfied, how would you rate Konami's output on Xbox 360 to date?" Um, really? Geez, can we go with a negative number? 'Cause not only did Bomberman: Act Zero and Rumble Roses XX fail to satisfy, they offended us. (At least we have all those Xbox Live Arcade ports...) So to answer the initial question, "yes" -- to whomever is listening -- Metal Gear Solid 4 is not only a game we'd "like to see" on Xbox 360, it's absolutely necessary (in order for us to be satisfied with Konami's 360 output).
Update: identified marketing group that conducted the survey; clarified why MGS4 is "absolutely necessary."