I think there's a difference between how aggressive a cancer is and its likelihood of recurrence. The article linked below gives some clarification. As with anything related to breast cancer, treatment options and plans are changing all the time as new tools become available or improved. So keep in mind that any statistics collected over time, say 10 years or so, can include data on earlier patients who had different more-limited treatment options vailable at the time. And might include patients whose cancer was found later than they are now since older women did not routinely have mammograms in the past.

Basically most newly-discovrered breast cancers today have better overall prognosis in general because of advances in treatment options. I like to stress this as it's both true and encouraging when considering 'statistics.'
https://www.verywellhealth.com/triple-negative-breast-cancer-prognosis-4778440