Grass Shading/Smoothing/Normals Issue?

Hey,

I’m following a tutorial on making some grass for my scene and have come across an issue that I cannot seem to resolve.

I’m hoping it’s just some setting I have enabled, but I’m completely flummoxed.

On the left is the grass that I made in 3DS Max.
On the right is the tutorial grass that was made in Blender.

They both have the exact same material, and as you can see, the shading is completely wrong on my version.

Things I’ve tried:

Normals - Vertex normals are pointing upwards on both grasses.
Shading - Smoothing Group 1 is the only smoothing group applied. No edges are marked as sharp.
I opened Blender and imported both meshes. Then Joined them and deleted the tutorial version in the hopes that it might transfer any other properties I wasn’t aware of. But that had no effect.
I did the same in Max, but that also had no effect.
The embedded material from Max/Blender is the same on both.

What am I missing??

Edit: It’s also worth noting that I cannot replicate the effect of the Tutorial Grass if I import it into Blender/Max and export it again. Doing so seems to obliterate whatever setting this is.