The reason why Slow Down didnt do as expected is not because of being sent to radio later or being an instant grat. Its because of the promo and zero support from HWR. The song would've slayed.
What Interscope is doing is the right choice - SOL can sell the album and as you can see it Hit Number 1 almost everywhere, if not Number 2 everywhere else. Just with pre-orders. The point now is to sell the album/Selena to get the praise she is receiving by critics again - "not Same Old Pop Song" - TIMES - and to make sure GFY goes Number 1 on Billboard Radio Song. GFY is still climbing iTunes again after they deleted the other version, so the song is not done.
SOL will be promoted when the album drops with a video and radio adds and everything as a single like Maroon 5 as someone said.
Now its an instant grat song. And as I see people love it, since it did SO well on iTunes and Radio and VEVO views in no time.
Stop freaking out bout every "light red update".
And whoever thinks HWR!?!?!?!?!? is better than INTERSCOPE. . . I think the difference for Selena [music,success, support] is obvious.