Meh, depends what's the goal.
Exceeding predicted performance is not a screw up, it's just providing a minimum guaranteed performance aka playing it safe (under promise, over deliver).
Also, we don't know by how much the most optimistic predicions were exceeded.
If you have simulations with varying levels of optimism, but all of them were too conservative, then you screwed up.
Meh, depends what's the goal. Exceeding predicted performance is not a screw up, it's just providing a minimum guaranteed performance aka playing it safe (under promise, over deliver).
Also, we don't know by how much the most optimistic predicions were exceeded.
Makes for nice marketing ;)