You had Crystal dudes and a teleporter. Did you even try to board the ship and take out its weapons?
Don't forget the Mind Control. If it hits one of your boarding dudes, you're in trouble as it'll go after your teleporter (and it'll destroy it before you can destroy the Mind Control) If it goes after your pilot, you're in trouble as you can't escape the hazard quickly (plus you have to send someone away from boarding to make sure the pilot doesn't smash the system). And if a fire breaks out in the helm, even worse.
As soon as I arrived at the beacon, I said "No way" and restarted as I wasn't going to stick around for a long and agonising death by fire, Mind Control, missiles and lasers. I might have won and have only one Crystal left or I might have lost horribly and my ship drifts through space. I could have known in 5 minutes and have a tale or tell... or I could just restart and hope my next jump is a jump to victory.
I recently had a game where my Kestrel C got boarded in the 1st or 2nd sector, Lanius & a Human died in the fighting. No problem, I got a Clone Bay, right? Well, it got hit and set on fire - two fires, actually. And since my last Human was wounded, I couldn't save anybody. I actually won the battle. Had to wait until the fires used up the oxygen before going in to fix the Clone Bay and make other repairs. I had less than 50% HP and an Engineer-turned-Pilot. Did I restart? No, even though I knew that in many cases I might not last much longer. In this particular case I went on to get my first hard win in this ship type.
And this is supposed to convince me that almost every loss in FTL is due to Human error and not just the RNG screwing with you?
When I hear stories like this, followed by "This is why you should never give up" I just roll my eyes and sidestep to avoid the incoming anvil.
My point is still valid. There are some battles you can't win and it's not because of Human error.