FormerlyHemlock
Hero
I think the most dramatic difference is that with point buy or array the highest stat you will get is a 15, while 4d6 drop lowest sees 16-18 somewhat frequently. The second source of drama would be 4d6 drop lowest producing moderately to dramatically different results for chararacters at the same table.
Yes, this exactly. 4d6 drop lowest sees a 16 or higher at least 50% of the time, I think closer to 60%.
This is why you see powergamers rolling for abilities in 5E (because rolling has a higher average than point buy) but taking "average" HP per level (because rolling has a lower average than PHB "average").