I actually enjoyed it, the sound of the song is a bit out of left field for Selena and I appreciate that. I agree that her enunciation could be better, but it's a good song.
Genuinely unsure if it will be a smash hit though.
She is deff gonna do well in the US, top 20 at the very least. Not sure if you can market this outside of English speaking territories though...RnB tends not to do that well there.
How a hit single should sound like to you guys? Look at the current iTunes top10.
This.
If she had released a dance single everyone would be like "Oh, another generic dance song, she should do something different !!! What happened to the urban producers she worked with!!".