Absol is better version do to higher attack, speed, and access to superpower
No, Kiri is a better version of Absol and will likely be used and tiered as such.
Absol's slight Atk and Spe advantages are worthless in comparison to Kiri's impressive bulk (65/100/70 isn't all that much worse than Scizor's 70/100/80) and as any SDAbsol user will tell you getting that SD is nigh on impossible unless your opponent is using Slaking. That's not the case for Kiri and his
9 resistances and
2 immunities including a SR resistance. The lack of a powerful Fighting attack is a shame but to be fair, Brick Break and Ankle Sweep have their advantages over Superpower especially on a Pokemon with decent physical defense. STAB Iron Head is okay too as far as filler moves go...it allows him to hit hard without using a secondary Dark attack like Absol is forced to do.
And lets not forget he resists Quick Attack, Ice Shard, Shadow Sneak, Extremespeed, Fake Out and Sucker Punch so priority isn't as much of an issue as it is for Absol and Competitive Spirit means he can't be beaten by Intimidate shuffling. This guy outclasses Absol tenfold tbh.
Not OU material but he has the potential to be used there and should be really potent in UU.
Kiri @ Life Orb
[nature and EVs dependant on how the metagame develops but max Atk for sure...I doubt 70 Spe will be hotly contested so might be able to get a handful of HP EVs in there]
- Swords Dance
- Sucker Punch
- Iron Head / Night Slash
- Brick Break / Ankle Sweep
Night Slash is still an option as otherwise you'll have problems with stuff like Haze Milotic, Roar [insert bulky water], Slowbro etc. Iron Head is a bit stronger, has a flinch rate and has decent neutral coverage alongside the fighting attack (most notably it hits Fighting types). Ankle Sweep is probably worthless here but there could be merit in dropping 15 BP in exchange for a 100% chance of lowering the opponent's Speed, especially in conjunction with Iron Head's flinch rate.