Uhhh... Tf's ult deals no damage, Panths ult is easy to avoid, and Shen's ultimate deals no damage, and have cast times, which means that they have no guarantee of reaching a target on the other team. Nocturne's ult deals guaranteed damage, and blacks out the screen, so that players lose allied vision, which is much stronger than revealing enemies, as it denies knowledge of who is under attack.
Nocturne is in a good spot right now.
Nocturne's ult used to have only 500 more range than it does now, but they nerfed it because (especially when he is a jungler with hard cc) it was too strong. That is not a huge difference in range considering how long the range is now. It is the longest range target enemy champion gap closer in the game, and has one of the best utilities to it of any ability in the game with the denied enemy allied vision to set up the gank, negating wards.
Noct is not as squishy as, and is far more viable than TF or Panth, even with his current ult range. His ult is not meant to be a teleport. It is meant to set up and make effective ganks, which it does better than either Panth's or TF's ulti. Shen is a different champion.
Originally Posted by Black Lister
Not only does his ult's range need to be increased to be on par with Pantheon's and Twisted Fate's (at the very least at level three), but it's damage, either flat or ratio needs to be increased as well. I remember when it was actually a strong (dmg-wise) ability.
His ultimate is a reasonably strong ability in terms of damage. The damage nerf on it was only for the late game. The only buff I could see working out for nocturne right now is an AD ratio on his e.