The HAC chart shows that CHFIL has achieved its peak audience reach as well as number of spins on HAC stations.
Positive "Bullet", positive "Bullet+" = Song is increasing (spins), and more rapidly than before (B=101, B+=12). That is compared to a week earlier.
On the other hand, it is slowing down on AC stations, which are fewer in number and reach than HAC.
http://kworb.net/radio/
These are kworb sales estimates (which apparently is still in beta testing):
The numbers correspond to: Ranking, days in top 100, sales ending week of 2/11 and then 2/18, and %Chng
Haley Reinhart - Can't Help Falling in Love 64 10 7k 9k +36%
The next weekly update should show the impact of her Idol appearance, and maybe a bit from her small radio tour/concerts.
According to Kworb, CHFIL is currently #80 in song sales on iTunes, and for every 10 downloads of the #1 song (Rihanna - Work), there is one download of CHFIL.