Gen 4 and the Axys where ground up new sleds form both manufacturers, facts are facts. In the pro vs Axys chassis pics it’s super obvious they are different and which chassis is which. Cat ran with the same skeleton since 2012. The proclimb was a step back for mountain riders, watch the video cat even says so them selves. They put fix after fix to that chassis every year to improve it. Having a chassis that would except such a broad spectrum of engines (4 stroke and 2 stroke) limited what cat could do. I hope the Yamaha and cat 4 strokes where left off the table for design purposes with catalyst.