I dont know where I read that every popbar is worth around 260 copies.....
Well.... Rude boy is right now 58 bars behind Nothing on You.
58 x 260 = 15.080 copies behind
That would change on a week to week basis. Popbars are determined by the sales of the number one song (each subsequent songs popbars are compared to the most popular song), and as we all know sales never remain constant.
1. Hey, Soul Sister - Train (=)
2. Nothin' On You (feat. Bruno Mars) - B.o.B (=)
3. Gives You Hell (Glee Cast Version) - Glee Cast (+4)
4. Hello (Glee Cast Version feat. Jonathan Groff) - Glee Cast (+4)
5. Break Your Heart (feat. Ludacris) - Taio Cruz (-2)
6. OMG (feat. will.i.am) - Usher (=)
7. Not Myself Tonight - Christina Aguilera (-3)
8. Your Love Is My Drug - Ke$ha (+1)
9. Rude Boy - Rihanna (-4)
10. Hello Goodbye (Glee Cast Version) - Glee Cast (+1)
11. Airplanes (feat. Hayley Williams of Paramore) - B.o.B (+2)
12. Whataya Want from Me - Adam Lambert (+10)
13. In My Head - Jason Derülo (-3)
14. Hello, I Love You (Glee Cast Version) - Glee Cast (+3)
15. Baby - Justin Bieber & Ludacris (-3)
16. Need You Now - Lady Antebellum (-1)
17. Young Forever (feat. Mr. Hudson) - Jay-Z (-1)
18. Telephone - Lady GaGa & Beyoncé (-4)
19. Breakeven (Falling to Pieces) - The Script (+1)
20. Imma Be - Black Eyed Peas (-2)
21. I Made It (Cash Money Heroes) [feat. Birdman, Jay Sean & Lil Wayne] - Kevin Rudolf (-2)
22. Carry Out (feat. Justin Timberlake) - Timbaland (-1)
23. Over - Drake (=)
24. My Chick Bad - Ludacris & Nicki Minaj (+4)
25. Tik Tok - Ke$ha (+2)
26. All the Right Moves - OneRepublic (-2)
27. Eenie Meenie - Sean Kingston & Justin Bieber (-1)
28. Bulletproof - La Roux (+3)
29. Blah Blah Blah (feat. 3OH!3) - Ke$ha (+3)
30. I'm Awesome - Spose (=)
31. Say Aah (feat. Fabolous) - Trey Songz (+2)
32. Highway to Hell (Glee Cast Version) [feat. Jonathan Groff] - Glee Cast (-3)
33. Solo - Iyaz (+1)
34. Alejandro - Lady GaGa (+2)
35. If We Ever Meet Again (feat. Katy Perry) - Timbaland (+2)
36. BedRock - Young Money & Lloyd (+2)
37. American Honey - Lady Antebellum (+3)
38. Live Like We're Dying - Kris Allen (+1)
39. Winner (feat. Justin Timberlake & T.I.) - Jamie Foxx (-4)
40. Naturally - Selena Gomez & The Scene (+2)
41. You and Your Heart - Jack Johnson (-16)
42. Haven't Met You Yet - Michael Bublé (-1)
43. Drop the World - Lil Wayne & Eminem (=)
44. I Gotta Feeling - Black Eyed Peas (+2)
45. Heartbreak Warfare - John Mayer (-1)
46. Pray for You - Jaron and The Long Road to Love (+6)
47. How Low - Ludacris (=)
48. All I Do Is Win (feat. T-Pain, Ludacris, Snoop Dogg & Rick Ross) - DJ Khaled (=)
49. Bad Romance - Lady GaGa (+1)
50. Today Was a Fairytale - Taylor Swift (+1)
51. When I Look At You - Miley Cyrus (-2)
52. Lil Freak (feat. Nicki Minaj) - Usher (+2)
53. Gimmie That Girl - Joe Nichols (=)
54. Billionaire (feat. Bruno Mars) - Travie McCoy (+3)
55. Gives You Hell - The All-American Rejects (+30)
56. Don't Let Me Fall - B.o.B (-11)
57. Beamer, Benz, or Bentley (feat. Juelz Santana) - Lloyd Banks (+2)
58. Stairway to Heaven - Mary J. Blige (-2)
59. The House That Built Me - Miranda Lambert (-1)
60. Ridin' Solo - Jason Derülo (-5)
61. Hey Daddy (Daddy's Home) [feat. Plies] - Usher (-1)
62. Hallelujah - Jason Castro (+16)
63. I Never Told You - Colbie Caillat (-2)
64. This Afternoon - Nickelback (+5)
65. Congratulations - MGMT (+1)
66. Uprising - Muse (-4)
67. According to You - Orianthi (-3)
68. Fireflies - Owl City (-1)
69. Smile - Uncle Kracker (-1)
70. Hello Good Morning (feat. T.I.) - Diddy - Dirty Money (-7)
71. Highway 20 Ride - Zac Brown Band (=)
72. Lemonade - Gucci Mane (-2)
73. When I Look At You - Miley Cyrus (-8)
74. Party In the U.S.A. - Miley Cyrus (-1)
75. I'm Back - T.I. (+2)
76. Rain Is a Good Thing - Luke Bryan (+3)
77. Empire State of Mind (feat. Alicia Keys) - Jay-Z (-1)
78. Roger That - Young Money (+4)
79. Replay - Iyaz (-4)
80. Poker Face - Lady GaGa (-6)
81. Say Something (feat. Drake) - Timbaland (+2)
82. Shots - LMFAO & Lil Jon (+4)
83. Life After You - Daughtry (-3)
84. Just Breathe - Pearl Jam (=)
85. Halfway Gone - Lifehouse (-4)
86. Over the Rainbow - Jason Castro (+30)
87. Steady Mobbin - Young Money & Gucci Mane (=)
88. Pursuit of Happiness (Nightmare) [feat. MGMT & Ratatat] - Kid Cudi (+2)
89. Tie Me Down (feat. Ray J) - New Boyz (=)
90. Rude Boy - Rihanna (+2)
91. Just Dance - Lady GaGa & Colby O'Donis (+5)
92. Boom Boom Pow - Black Eyed Peas (-1)
93. Kissin U - Miranda Cosgrove (-21)
94. All the Way Turnt Up - Roscoe Dash (+1)
95. Temporary Home - Carrie Underwood (-7)
96. Paparazzi - Lady GaGa (-3)
97. Kids - MGMT (+4)
98. A Little More Country Than That - Easton Corbin (-4)
99. Single Ladies (Put a Ring On It) - Beyoncé (-1)
100. Hell On the Heart - Eric Church (-1)
Steadily making its way to the top. 
