Comparing the two side by side, I don’t think the V4 version is a rework of the V1/V2.
Looking at the textures, I was wrong. The V4 is an update.
OK, I’ve got the V4 Version loaded. It looks kike an automatic conversion of some kind.
The backpack (not the straps), equipment belt & equipment look pretty good, except the equipment belt is too loose.
The backpack straps look pretty bad but maybe retexturing can save them
The mesh of the shirt is either broken or it intersects V4’s body. It still has the V1 Project Lara logo.
The shorts are too baggy. Maybe fixable but I’d sub something else instead.