Windows vs. Linux file managers: Sorting triangles point in opposite directions?

• Windows Explorer's sorting triangles: ▼ Larger and newer files first.
• Various Linux file managers: ▼ Smaller files first. ▲Larger files first.

Why is there possibly that distinction? And which one is more suitable and less confusing?

I prefer the way Windows Explorer does it, because the long edge of the triangle (representing larger files) is on the side of the larger files.

In Linux, the upper side should probably represent the tip of a mountain. But I still prefer the representation of Windows Explorer.