So here’s my line of thinking:
I feel, that any player-generated damage should not only stop Reactor attacks, but pounces as well. That means from Hyde’s afterburn when setting the monster on fire to a measly pistol when a nearby Hunter is incapacitated.
Because I think the Pounce works fine enough as a stealth attack for food and to punish stray Hunters. Going lone wolf is a risk vs reward, and there is little that can stop a lone Hunter from being pounced, incapped and even killed before support can arrive. This is the risk vs. reward system at play.
However, the monster’s massive damage potential coupled with their ability to knock the player around the arena (ie, move him away from other downed Hunters that would have Line of Sight to shoot the monster and stop any subsequent pounces means that the monster is the “shotcaller” when it comes to where/how he chooses to engage. This game is supposed to reward teamwork. Allowing downed players to help stop a pounce seems to aid that playstyle.
Weapons like tranqs, darts, etc. Those won’t stop a pounce. But personally I’d like to see actual weapons have this ability. And if not, I’m always interested in hearing how the current mechanics of gameplay were justified as sufficient from a balancing perspective.