Didn't miss any points, just countering with how pointless your numbers are. Talking about tp efficiency to the point where you say a guy can last 5 minutes in a pull is an utterly useless point.

As for the rest, I'm not even sure where to begin. Maybe put it this way simply, if you're at the point you're out of tp with 12 mobs to fight, as a ninja, you have 2 options: wait 2 ticks and do 1200 potency, or do 2 single target moves and do roughly 1/3 of that. It's not even close. At 6 mobs, it's 600 potency over the tp gained from 2 tics vs an average of about 440 potency on 2 single target moves. Those kind of differences add up.

And to say "pulling 12 mobs isn't the most efficient" is absurd, because at some point you're forgetting there's time saved in doing 1 pull instead of 2 or 3 pulls. Not to mention when you do bigger pulls the melee have more time between pulls to regenerate tp at the faster rate, rather than start fighting again every pack of 3 mobs and not get that benefit.

And the only drawback to "damage is split between the enemies" is if the tank+ healer can't handle the incoming damage but we're talking about dungeons here, and when that gets to be the case you pull smaller cause you're undergeared, not because it's more efficient to do so.

tl;dr your math is just really off. idk man. As much as I'd like to say "oh you showed numbers you must be right" if that were true nobody would ever fail a math test.