Palp Aces success also cannot be attributed only to Palp - you could pretty readily say there's not many other lists making succesful use of Palp which suggests the aces are bringing a lot to the table.
Absolutely, and this is predicted by both the Palpatine math and the Aces math.
I'd be interested to see what the statistical difference is between Palp Aces and just Triple Aces in terms of performance, if able to adjust for player skill?
Triple Scouts' post-cut performance is 130% this Regionals season, which is decidedly better than Palp Aces. Unfortunately it is difficult if not impossible to differentiate player skill from list quality with the data that is publicly gathered. With enough data points however, player skill will tend to converge. I have pulled 121 Palp Aces and 75 Triple Scouts into my tracking spreadsheet so far.
One question: you say the Lambda is worth 16-17 points based on its stats and dial, which seems reasonable. In the Palp shuttle instance is there not a case to say that the ship itself is worth even less because it'll spend more time staying out of combat in order to protect Palpatine? If so this would need to be taken into account in the final calculations.
You can certainly make that argument, and in fact for specific game tape you should look at how effective the Shuttle was outside of just using Palp for dice modifications.
It's in my backlog to do a comprehensive analysis of many game logs to empirically determine Palp's value and the Shuttle's value. If I ever get around to actually doing this, I would probably crowdsource the data collection from vassal games, and then do the math myself.