What track is that? Every comparison I've seen has the 1LE faster than the PP2. Actually, I think the 1LE is faster than the gt350 too on the same track so not sure how a PP2 would be fasterThe only reason this is even a "current vs. 2 year old" discussion is because the car didn't come out earlier. Ford could have slapped the supercharger on in 2016 and it would have set the same time. They just chose not to, but that doesn't mean they are behind in technology.
And last I checked, the PP2 Mustang is a full second quicker than the SS1LE on the same track.
Also, comparing it to a car that's 700lbs lighter and in a completely different category is not really a proper comparison in terms of which chassis is better. They each were designed for different purposes eg. rental car vs. flagship car.