I've heard 35-40% sox fans
Fellow Rxfriend 5TEAMPARLAY can testify for Game 7, but I can state with great confidence that in Game 6 which we attended it was solid 85% Rays fans.
There were maybe a couRple thousand SoxFans on the 3B side and of course scattered elsewhere
I was in 12th row of second deck (behind 1B duougt) so I had a pretty panoramic view of the entire stadium (wink to PARLAYIN)
Between half innings I routinely stand up and stretch and looking around I am confident that in the sections surrounding me (which were about 500 people each) we outnumbered SoxFan by a good 20 to 1