Probably. Paralysis is actually exceptionally powerful (and the only way to reasonably acquire genetic material). General rule of thumb seems to be: divide the unit’s (max) HP by 10 (to represent their strength). If you’ve done 25% of that value in paralysis they lose 1 AP. Any paralysis applied after that while they suffer from paralysis saps further AP on its own. If you reach 50% they lose 2 AP on their turn. 75% - 3 AP, 100% - 4 AP: they’re Paralysed.
A direct example would be a 280 HP Triton. At 7 Paralysis they’ll lose that 1 AP. At 14 they’ll have 2 AP. At 21 they lose 3 AP. At 28 they’re paralysed and have 0 AP. They lose 1 point of Paralysis a turn so you want to generally get that kind of target into the low 30s of paralysis if you plan on taking a turn or two to clean up.
12 Paralysis would really help to lock down most any critter you want to take home and 60 pierce would mean you don’t even need to shred them first.
The Hera definitely needs to pack more of a punch though, in terms of paralysis. Even just a one point increase would make it almost worth using.