Strain
Well, what can I say. Actual autos. That are true F1s and topped vs Untopped I can say I did have differences in both phenos. But for size, bud density and so on. It's very hard to tell which is different. The Untopped had a more powerful punch to it taste wise which I'll get to. The buds if were given to someone wouldn't be able to tell them apart.
Another difference was weight from harvest. Got 30% more on the umtopped version.
Got 69 g from the untopped and 101 the topped. But, quantity id much prefer as there was very little difference in bud, I could tell the topped was more pungent and potent. But, not by much. And only if id not of known them apart. I'd not of known the difference. So really is there a difference..
So, yes, untopped wins i think.