I dunno dude. Both PoTWS and Charged Chop for me are at 240% and on many tries on the Pupa I was smacking Charged Chop doubled PoTWS every time. PoTWS was hitting for around 76 and Charged Chop for around 156.
Seriously?
The whole problem was that apparently the cast time multiplier originally applied to the whole damage instead of just the base damage (that's the way Snipe works).
When they "fixed" that, they broke it the other way so that there was no multiplier at all. Now it sounds like they put it back to the original broken state instead of fixing it so that the base damage gets the multiplier and not the tool tip part. I'll see if I have a toon that can test to confirm what you're seeing. For now, this just sounds like a ton of facepalm to me.