I think Madonna had more hype. She was the first female performer since Janet. This was her most high-profile U.S. performance in a very long time, & I think many people expected controversy coming from Madonna. The W.E. press, Elton shade, and her Janet diss & Gaga diss also helped generate anticipation as well.
Did Madonna have a Billboard poll for the songs she should perform?? Not because that's huge but because it seems like Madonna's hype was more about her material which is pretty much how Bey's hype has been with the addition of Pepsi's sponsorship and Ford having Bey enter in a car.
However, if Madonna was more buzzed about its because people know with Bey they're getting a phenomenal performance without any controversy.
"beyonce superbowl halftime" - About 1,100,000 results (Beyonce hasn't performed or spoken about it yet.)
"madonna superbowl halftime" - About 201,000 results
Bey already gotten much more headlines with her announcement.