Size of seedling an indication of full grown plant size?

So im growing 4 plants right now they are a week old. 3 of them ( 2 white widdow 1 purple haze) are the same size but one of them (skunk) is an inch taller than the rest has a thicker stalk and is in general just bigger! is this a sign its gonna be a ginormous plant?! i hope so

Most of my seedlings grew uniformly, but a couple took off faster and got taller, same strain though. Doesn't necessarily mean they;ll be the best producers though, it could be taller but use more energy on stem growth.

its all genetics..