Studies comparing Blackcurrants with Blueberries and Bilberries.
Brief overview of Blueberries from Examine.com: Blueberries are a popular food and frequently supplemented. The antioxidant and anthocyanin content of blueberries makes them particularly effective at reducing cognitive decline, supporting cardiovascular health, protecting the liver, and reducing liver fat buildup.
Direct comparisons between berries for Anthocyanin, Vitamin C and Antioxidant activity levels.
-Total Anthocyanins (mg/100g):
Blackcurrant = Avg. 550
Blueberry = 135
Bilberry = Avg. 478
-Vitamin C (mg/100g):
Blackcurrant = Avg. 183
Blueberry = 5
Bilberry = Avg. 1
-ORAC Antioxidant Activity (µmol TE/g):
Blackcurrant = Avg. 108
Blueberry = 60
Bilberry = Avg. 11
Different study compare mineral content of these berries.
I'm didn't bother to calculate the averages for the vitamin content of the berries, but if you are interested i will leave link for the study in the Sources.
But here is brief overview with words:
Blackcurrant had more minerals (Calcium,Magnesium,Potassium,Sodium,Phosphorus,Copper,Iron and Zinc.) than Blueberries or bilberries, with the exception of Manganese, where the difference was still minor.
Also Vitamins were compared in different study, but for those who are interested there is link in Sources.
It should be noted that these studies are comparing New Zealand Blackcurrant Ben Ard type of Blackcurrants, New Zealand Blackcurrant Ben Rua type of Blackcurrants, Canadian Blueberries, Swedish Bilberries and European Bilberries.
Overview of blueberries: https://examine.com/supplements/blueberry/
Anthocyanin, vitamin C and antioxidant levels: http://www.nzblackcurrants.com/assets/Uploads/17.7.07-NZ-Blackcurrant-vs-Bilberry-vs-Canadian-cultivated-blueberry-EA56.pdf
Read more: reddit.com