HI bud.
No worries. No two plants are the same and can grow quite differently from each other, even under the same environmental conditions.
They both look fine to me :) Even the one that is "just forming pistols".
It's Northern light. They have extended grow times, even the auto flowers. One may take three and a half months. An other may take up to five months.
You won't be disappointed with either.
Let them do their thing and they'll be ready when they are ready. It'll be a while still :)
Hope this helps, even just a little.