ALL IN depends on position, players, chip amount and other factors, not just the cards.
I 100% agree, it all depends (stacks, tournament or cash, opponents qty/style, position, etc). In general, I believe it is a mistake to go all-in in a tournament knowing only 2 cards, unless you are shortstacked. Yes, we will win more hands than we lose with AA, but a single all-in loss in a tournament is a disaster. In a tournament setting, if we consider a sequence of 10 hands where we have 85% probability to win in each, we will have the most chips at the end of these 10 hands by only risking/winning 66% of our stack, rather than going all-in and losing 1 time in 6, which is a very real possibility. We will only win 5/6 times with 83% equity, like AA.
In a cash game, let 'er rip. There is no need to string consecutive winning hands together in a cash game, though of course, it is better if we do. The reward in cash far outways the penalty for having zero chips 1 in 6 times, in a cash game. If I double up w AA in a cash game, I can walk away from my session and consider it a success, because I earned 100% ROI. In a tournament, winning 5/6 allins may not even get me to the money bubble. We must think differently.
No one seems to really agree with me on this, but I can prove it. Of course, I will probably never win a million dollars playing poker, so...... go figure.