NZDUSD quickly whiplashed on that.
I love retests too, and I also think that trendline break alone does not mean anything in particular.
HOWEVER
Not every trendline is equally important and you have to assess the situation in bigger context
For example, i would trade upward trendline break that has been touched 4 times while currency is in downward channel.
Trendline breaks when there is severe MACD divergence can also mean a lot.