It is somewhat humorous that someone else is making the money off of Krahn's designs. I would have to guess these are better than whomever did the make good wave of these that I believe were 3D printed. I would have to inspect these in person to give a final opinion, but it looks like Krahn could have had something here if he just didn't screw everything up horribly.
I guess the best comparisons you could make would be putting the Rebel Trooper and Holo Leia side by side with SS's RT and holo Jedi.
The one thing that got me to preorder this wave was the look of the x-wing pilots (like if Kenner had made these, it looks like they just tweaked the x-wing Luke a bit) and the Beru (which feels to me like if this had existed back in the 70's, it was what was used for the Hasbro Beru way back in the flashback wave).
Too bad this all fell apart because it looks like a nice wave of customs.
I'm not sure what the Holo Jedi you're referring to is, but I did take a comparison photo of the various Fleet Troopers a few months ago...
Left is SLC, middle is PCF, right is SS:

The quality on these new SLC lost-wave figures is as good as I could have hoped for. They do feel well produced.
As for the pilot legs, someone did a pretty good dive into what they seem to be made of over on Rebelscum... that discussion starts here:
https://forum.rebelscum.com/threads/3-75-professionally-made-kenner-style-customs-repros-discussion.1147498/page-68#post-20807464