After spreading, I increased the speed to 4(equivalent to 5 in PC) and started doing multiple section passes slowly and with slight pressure(I was impressed as the rotations weren't stopping on moderate to heavy pressure, even on heavy it was moving!

)
Thank you for the update.
With your first hand experience recorded here for posterity, anytime someone comes to the forum and asks...
Will the DeWALT DW443 Dual Action Sander work to polish paint like a Porter Cable 7424XP?
We can answer "Yes" and then refer to this thread.
As I've posted before,
most "DA Wood Sanders won't rotate a foam polishing pad with product under pressure", and to date that still holds true, but from what you've posted the DeWALT DW443 will rotate a foam pad under pressure.
One Con regarding DW443 is, it make a hell lot of noise!!!
though I was lost in polishing, a few of my neighbors came out to see what was making such a noise!!
(DW443 was also vibrating the bonnet leading to that amplified sound!!)
and my hands hurt from the vibration!!! (any remedies to prevent vibration damage?)
Thanks for including the negative aspects of the tool also, vibration is a HUGE deal to most "Enthusiast" detailers so anyone reading this that doesn't want vibration issues, you might want to look at one of the other tools on the market.
There was a definite improvement in the test spot. I kinda tried to show the difference to my mom but to her it all appeared the same!
The difference between a swirl and squirrel
All the micro-marring had gone! I did a super close surface inspection and it was perfectly smooth!!

( I love Menzerna!!!)
Menzerna has definitely figured out how to create abrasives that will remove defects out of clear coat paints and polish out to a clear, defect free finish.
Clear coat paints are very difficult to work on and I got into this business when the industry was changing over from single stage paints to clear coat paints and at that time polish manufactures, (all of them), were struggling to find a way to abrade clear coats without leaving scratches in the paint at the same time, and many polish manufactures are still struggling with this issue... but Menzerna has definitely created the abrasive technology that works and excels in this area.