Yeah, well, you're probably right there. Multiple points of imbalance doesn't mean that the game is balanced, it just means that it is never actually balanced. Weak at the beginning, strong at the end wizards just means you're baggage for the first half of the campaign, and a god for the second.
Totally random stat generation was never part of my D&D experience (I started with Basic/Expert D&D where 2:1 stat trades were part of the rules, and every group I ever played with had something similar), so, maybe it's a blind spot in my experience. To me, all it means is that the guy who rolled lucky is so far ahead of everyone else, that it's going to ruin my experience, regardless if I'm that guy or not.