Blackheart has his fighting skills and can defeat Trigon. Trigon is still a tough fighter, but he’s not at Blackheart level. Blackheart could take him down easy enough. Trigon gets another loss. Blackheart wins.
DReager1.com
The Ultimate Fighting/Review Site
DReager1.com 
That is massive BS. Pre-52 Trigon showed the power to destroy universes while Blackheart is only a starbuster.
Yes, but Blackheart has the massive speed advantage. His starbusting techniques would surely deal some massive damage wouldn’t you say?