I wouldn't call Dontari Poe a bust. It's way to early to do so. He has 16 tackles, 11 solo and 5 assists. He is projected for 28 tackles, 20 solo and 9 assists.
Let's compare that to a couple guys that are pretty good.
Casey Hampton's first season. 22 tackles, 9 solo and 13 assists. He also had 1 sack.
Haloti Ngata's first season. 31 tackles, 13 solo, 18 assists , 1 sack.
This by no means forecasts Poe to be the same quality as Hampton or Ngata. But it also shows that he shouldn't be crowned a bust at this point in his career. Romeo has groomed a bunch of defensive standouts, and I believe he is doing a good job with Poe.
If someone challenges you, accept the challenge. Be consistent and persistent, and do it with a smile on your face. Then let them know exactly what that smile means.