I don't have many pictures off hand however I will try to see what I can dig up.
That's good that you have the option of running either a stock or walsh linkage.
I really like the Axis PRS shocks it uses the same concept of a piston entering into a cup within the shock to increase bottoming resistance without having to use a heavy spring and compression which limit mid stroke action. A hundred ways to skin a cat on doing this.
I have the Elka stage 5's and they perform really well; much better than the Fox's I had as they pushed to much in corners. I will say though that they have been reworked a ton and the pistons were modified to allow more flow and the check valve taken out. Nothing really has changed with the stage 5 vs stage 4 elkas other than appearance.
This cut away you can see what a bottom out cup is: a lot of manufactures use this concept in one way or another whether it is truly using 2 pistons or 1.5 etc.
The fox 2.0 is not the RC3 however this at least shows what the bottom out cup is and you can see how it would affect the lower portion of travel. The podium 2.0 is not adjustable. I do agree with fox not being on par with a lot of others however after tweaking them I don't think any one shock really is better its all in the tuner.
Fox Racing Shox Podium RC3 - Features - Vital MX