I'll agree it was pretty bad, but what about Roseanne Barr's rendition for the Padres {baseball} in San Diego where she spit at the end of the song?
Let's add a little perspective to that comparison. A comedian normally known for her obnoxious behavior is asked to sing at a routine game in the middle of the season. Result - an embarrasment to the Padres and to baseball in general.
Vs.
Two bona-fide, Grammy winning, platinum album performing stars. Aretha, one of the best ever and Aaron Neville, whose family and music is an institution in New Orleans are invited and plan for weeks, to deliver the Anthem at the most watched sports event of the year.Result - The worse Superbowl/World Series/NBA CS rendition ever. (Maybe Jose Feliciano in 1968 can compare?)
Yes, Rosanne's was worse, but then everyone knows she can't sing a lick.