This year was a proof that white artists can get #1 in overall airplay, even if they sing Pop.
There's never been a discussion that Pop songs can't, I'd rather use the word Pop instead of white, but that it's a rare occasion. It still takes circumstances for them to reach the top position.
Case in point "Tik Tok" luckily had HUGE support from Rhythmic stations, while Ke$ha's recent singles are not getting as big on Rhythmic, therefore she hasn't been getting to the top. "Need You Now" we all know dominated literally every format possible for it to. "California Gurls" same situation, even being huge on Hot AC.
In contrast, "Empire State of Mind", "Bedrock", "OMG", "Rude Boy", "Nothin' On You" etc. all easily got support from Urban/Rhythmic and cruised right to the top.
From late 2001-just recently, R&B/Hip-Hop influenced songs ruled the overall airplay top spot. Other songs that fit having the perfect circumstances were "Beautiful" (Aguilera), "Hips Don't Lie", "SexyBack", & "Big Girls Don't Cry". 9 years, 4 pop songs.
know it ain't right, but we do it anyway
---------> my last.fm