Heron had only just begun to channel his abilities, so I wonder if his ceiling is much higher than it may seem.
Heron’s ability to fight amongst the gods was well-demonstrated by the end of Blood of Zeus Season 1, but it wasn’t entirely clear what his powers were.
I wouldn’t be surprised if he’s just as strong, though as Zeus said, being the child of a god doesn’t immediately grant someone powers.
He appeared to have some measure of strength and durability to survive the enhanced strength of demons, and we briefly saw him channel some electricity like his father Zeus.