Sorry Cloud, but there are two things wrong with that, one of which, I deleted. Darkrai does NOT base base 165 special attack. That would put it higher than Mewtwo. This is bullshit, as only one thing is stronger than Mewtwo special attacking wise. Deoxys-A. Also, you stated that at base 165, it hits 405 attack. Yeah. If it is base 165, then it would hit 471. You did get the actual stat right, but not the base stat.
Also, someone said that Absol has that Sucker Punch STAB to work with. Yeah, that isn't its only appeal. Did you know that it has a 25% crit chance with said Sucker Punch? Also, you give it Night Slash. Which then has a 50% crit chance. It also has barely average speed, and is a great counter to OU and UU Pokemon like the Slows and Reuniclus. And about the critical hit chance, you might be asking HOW such a thing is even damndably remotely possible. I'll tell you how.
Critical hit ratios are divided up into Stages, much like stats, but work quite differently from normal stat stages.
Stage 1: 6.25% The standard critical hit ratio. Almost every move has it, a lot of people know this.
Stage 2: 12.5% The standard for high crit ratio moves. I.e., Night Slash, Psycho Cut, Stone Edge (Absol gets all of these) Leaf Blade, Razor Wind, etc.
Stage 3: 25% Somewhat difficult to reach, but possible with a certain ability and a certain item.
Stage 4: 33.3% Very difficult to reach, except for those with a very nice ability and a high crit ratio move.
Stage 5: 50% Yeah, this seems damndable scary.
(Link here. http://www.serebii.net/games/criticalhits.shtml )
How can Absol hit 50%? Super Luck and a high critical hit ratio move. You see, Super Luck doesn't increase the critical hit stage by one, it doubles it. Meaning a Stage two attack goes up to a stage 4, and a stage one moves up to a stage 2. Add on Razor Claw, and you add an addition stage to the total. Meaning Night Slash = a 105 power move that crits 50% of the time off of base 130 attack. Did I mention Swords Dance? I might have forgotten Swords Dance. So, what can you expect from a 105 power attack off of 788 attack that crits, literally, half the time? How about "Holy shit, I'm screwed."