Based on Proline's latest offerings, the buggy V3 and truggy VTR, the design philosophies seem to be differing. For buggy, they're widening the tire (V3s are wider than previous versions) while for truggy, they're narrowing the tire (VTRs are narrower). Why wouldn't the design philosophy for one not work for the other? The V3 is said to be more stable because of the wider width. Does that mean the narrower VTR is less stable? Will buggy and truggy tires eventually evolve into being almost the same in size, or at least width?
Just curious as I've started looking for tires recently.

nobody runs the V3's

A lot of people run them as they are used for a tuning tool .

not here in California, I'm at about every big race and haven't seen one in months

most every Pro-line factory driver is here

Unspring, rotating weight = bad. The lighter the tire/wheel, the better the responsiveness of the vehicle.