Ok, despite my repeated efforts, I suck at Sins. Against hard AIs, I managed to win a 2vs3 once, and didn't reproduce the feat yet. I usually get crushed. Well, it's a war of attrition really. At some point, the comps just out-economy me, and I realize that this could go on for 2 hours but I'd be the loser at the end. I stop expanding, I just build more and more ships, at some point I'm just rebuilding lost ships, and at some point I'm on the decline. There's no escape, I'm just more and more doomed.
I have read tips and guides and I think I know my theory all right, I think what's lacking is the execution.
What's I like to see is a replay of at least a 2vs4 on hard, or something harder. Show me how you stomp computers even when clearly outnumbered, how do you manage to stay on top, what defenses do you build. I've heard that good players can defeat several AIs, so please show me how. I think this would help me a lot also in multiplayer where I am very slow compared to good players.