[Kromm]

Gnomes and dwarves aren't just scaled-down humans! They're as big as extra-stocky humans above the waist, and have shorter but much thicker legs below.

For humans, legs count for 40-50% of height. Thus, humans who "have heights between 4'10" and 6'11"" are 2'10" to 3'6" torso and 2' to 3'5" leg. For gnomes and dwarves, legs count for 15-25% of height. Thus, gnomes and dwarves who are "between 3'3" and 4'8" tall" are 2'9" to 3'6" torso, and 6" to 1'2" leg.

But wait, there's more! A dwarf's torso is heavier than a human's because of larger heart and lungs (FP+3), an overdeveloped liver (Resistant to Poison 6), and significant thicker fat and muscle (Tough Skin 1 and Lifting ST 2). A gnome is built similarly, but with a bit less fat and muscle (no Tough Skin or Lifting ST). Those extra FP probably imply wider airways, too, meaning a thick neck, big nose, etc. . . . the head won't be tiny.

In both cases, the legs are overdeveloped as well. Again, this is most prominent for dwarves with their Lifting ST, but both races have "just" Basic Move-1 despite having around 1/4 to 1/3 human stride length. They're taking two or three strides per human stride to manage this, yet moving as much or more weight with each stride. Thus, they have remarkably powerful legs, far thicker than a human's . . .

The net result? Human-sized head, neck, and arms; larger-than-human-sized torso; and shorter-but-thicker legs that weigh almost as much as a human's. Thus, no part is likely to weigh less than for a human, and many significant parts are likely to weigh more. That's why where humans weigh "between 90 lbs. and 300 lbs.," gnomes weigh "from 90 to 250 lbs." (about as much as a human if small to slightly less if large), and dwarves weigh "120 lbs. at the short end to well over 350 lbs." (a bit more than a human across the board, thanks to that ox-like torso).

Is this realistic? I have no idea! But the takeaway message is that gnomes and dwarves aren't just scaled-down humans.