Ginger wrote:
Here I think you could argue both cases - min maxing in this case would be to take Guardians and War Walkers, or 600 pts for 4x formations. In a 3000 point army you could field 5x Guardians and 15x War Walker formations(4 units), but I really doubt it would be competitive because of the total lack of Eldar armour - but do try it for a laugh

Hilarious example, but the reason that's not min-maxing is because the army will most likely perform crappily (is that even a word?! *laugh*); the intent of min-maxing is to gain a design-unintented or metagame advantage over taking a "balanced" army: that the advantages of the maximizing more than overcome the disadvantages of the mininizing. That's not a certainty with the Guardian and War Walker army.
A role-playing example is spending no points on Charisma to get a higher Strength, because you know, as a player, that you can use your own ability to speak well to influence things in game which your character shouldn't be able to, while still relying on the game mechanical benefits a higher Strength gives you in combat; minimizing the Charisma has no true cost in actual play in the end.
Another aspect of min-maxing is that many consider it both unfluffy and unsportsmanlike; always taking the "best priced formation for the points" does not, necessarily, run afoul of either of those two criticisms and is *not* min-maxing.