She can't submitted "Drunk In Love" to both Best R&B Performance AND Best Rap/Sung Collaboration. It's either one or the other. Same with Urban Album and R&B Album.
I think it doesn't get the props it deserves. "Fallin'," "No One" and "If I Ain't Got You" are more praised, but they seem so basic and trite compared to YDKMN. The composition, arrangements, lyrics, vocals, etc. easily trump any of those. Glad it won Best R&B Song that year.