Here's a little comparison of 4 methods for generating attributes. Method II isn't included as it has the same odds as method 1, only it generates more sets to choose from. Also bear in mind that in Method III you are free to assign your rolls as you please.
As in most of my games, I prefer my players to use 4d6 (drop lowest) in order from top to bottom. Some campaigns I have allowed players to point buy 2 for 1. (setting some sort of limit on the amount of buys).
Obviously, OD&D we roll 3d6 straight. Using the suggested rules for point buys.
We use this method... sharing 78 points among the attributes.. Usually, you could get something like 18, 16, 14, 12, 10 & 8, or 13, 13, 13, 13, 13, 13.
The graph makes it clear to me why Method 1 is Method 1. It's the only spread that keeps bonuses for higher rolls bonuses. But I guess if everyone wants a trophy....
Used Method one last night in character creation. Seems like the better method for AS&SH. Superheros are not needed. Also opens up more roleplaying opportunities.