[bouchard]

Depends if you make overly conservative assumptions in your modeling...

[Dylan16807]

If you have simulations with varying levels of optimism, but all of them were too conservative, then you screwed up.

[bouchard]

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 ;)