Here we go, here's first-hand examples.
T3 is the richer-colored MA's in these recent US30 screenshots, IE/2 the dull-colored.

T3 may be "smoother", but IE/2 is better for consolidation and catching transitions for scalping (and better for coding), as T3 doesn't put as much emphasis into breakouts from consolidation.
IE/2 doesn't overshoot like T3, and I have no clue why T3 caught so much attention.
Reading the PDF file, needing something smoother was the goal they had for creating T3.
"Smoother" is not always better, the markets don't move in a "smooth", user-friendly way.
I'm not undermining anything, it just is what it is... Put them both on the charts and see for yourselves.
I'm just saying... I've invested too many years into T3. Lol