I'd say it's showerproof - ie water beads on it and it will withstand 15mins or so depending on the rain.
Not sure where you were cycling today, or what sort of cycling you were doing, but from where I was (City and North) I'd have said the Wind Jacket would have been perfect.
Race cape if it's wet. PTJ is OK for showers, wind jacket isn't really waterproof at all.