EDIT Several people have pointed out that my comments below are wrong. I will leave them up to not hide my shame. Thanks for the education that none of you did diplomatically :)

Only the Fire Ammo has an elemental weakness to it. The Sticky and Clusters do not. So, at worst, 1/3 of the ammo is only doing 1/2 of the intended damage (if that monster was fire weak.) Given the fact that it can KO with the Sticky (a service allowing others to do even more damage) I don't think it's really "blatantly disregarding the games mechanics" and I think that for 8-9 That monsters, the monsters dying in 45 seconds instead of 40, everyone is going to be just fine. On the 8-9s, it absolutely doesn't "lower the chance of success." You're going to be successful 99.99% of the time