I assume you are talking about Fallout 2.
The relationship between Agility and AC is obvious. Sequence is also pretty useless in my opinion, so there would be little point addressing that.
Who knows what was left out of luck.
Please read it properly before slandering it. Per is the greatest authority on the games that I know of. On that note, this is not the right forum for this type of discussion anyway.
For a 'Jinxed', LK 1 character, you would probably get the toxic goo, pariah dog and exploding brahmin encounters. It seems that most of the Luck tests reward high Luck characters rather than punish those with low Luck, but I've never played with LK 1 as I like Sniper Perk too much. Combat would be a nightmare because of Jinxed.
I am lucky to have a hardcopy of the Fallout PnP rules by Jason Mical. Unfortunately, I can't find it on the net with a quick search. He adapted the rules set so that nearly everything is available. The problem is, I don't know exactly what he changed and what he took straight from the game. Anyway, according to his 2.0 rules, critical failures are a flat 3% chance regardless of Luck. Sequence is 2xPE in the book. If you are Jinxed,
any failure has a 50% chance of being upgraded to a critical failure. I'll test that tomorrow. That might be the same as the original CRPG, as battles seem to take ten times as long, with many explosions etcetera.