If everything stays normal, T.I. will be #1 for another 3-4 weeks.
This week he should be #1 because his audience dominates greatly over P!nk. Then next week he'll be HIGHER on pop radio, which will tower his audience over 100m+ at least. Move on to the NEXT week the album will be released to iTunes and that will boost the single and album version, giving him higher downloads that week. And I'm sure the aftermath week won't completely die.
The only way P!nk can dethrone is if she sells way higher than he does. And the only way for him to come down from #1 is if some random song just blows up, which will most likely be Beyonce.
