bad match up?

hey i was testing my fire fist deck out on DN and it was doing really well but it seems that every time i face a hero beat i lose does fire fist just naturally have a bad match up against heroes?

Even a tier 4 and beat a tier 1

i guess you have a point their lol

Heroes can spam E-Hero Shining pretty strongly.  This would overpower your Fire Fists, as it has a lot more attack, and defeating Shining would only mean they get the materials for the fusion back.