amp713, have you shot any animals with them or any animals with a different broadhead that you could compare these to? The "lots" of people shooting them, have they shot them and killed animals? I know lots of people who shoot lots of kinds of broadheads...at targets. They carry them in their quiver too, but have limited/if any experience with them on animals.
Not "anything" (in terms of broadheads, since that is what this thread is about) can fail... Only a mechanical or lesser quality fixed blades can fail.
There are two people on this thread that have shot animals with them, one used them on deer and liked them (common trait among mechs/deer sized animals). The other used them on Elk and said they deployed late... A few others posted that they had issues with them while "testing" them.
Disclaimer... I love shooting mechanicals, so this isn't a "COC is better than Mech" war... Just saying there seem to be better options available, though I could be wrong, let's see some entry/exit holes.