There is little point to referees having a red card if it cannot be waved at players like Hore and the South African prop Dean Greyling, whose flying assault on Richie McCaw at Dunedin in September could have caused awful damage.
In the Hore-on-Davies case, the match officials had handy evidence that something was wrong in the form of the 2m tall Cardiff man lying prone on the ragged Millennium Stadium turf.
And yet somehow, the game cannot review what the world gets to see in at least triplicate.
Hore was heading towards a ruck and attacked Davies - who wasn't even close to the ball - from behind, swinging an arm to the side of his jaw and then landing both knees on the felled opponent, to the head and back, sending Davies to hospital in a daze.
Had, for instance, a Welshman attacked Richie McCaw in this way, our little rugby nation would be awash in outrage, have no fear about that.
While the silence out of the Sky television talk-fest box in condemning this act was as deafening as it was expected given their history of All Black-centric analysis, the impartial eye could only look on in horror. Men who can become incensed at the referee's faulty set square at ruck entry time were as stony silent as poleaxed Davies.
Justin Marshall was perhaps on the verge of saying what everyone else was thinking but couldn't get the words out. The rest found the situation beyond their skill sets.
There is no excuse or explanation for what Hore did, and the All Blacks management are best advised to condemn Hore with an honesty to match that of the Welsh captain Sam Warburton, who admitted to the obvious - after seeing big screen replays - that he deserved to be sent off for a tip tackle in a World Cup semifinal last year.
Hore must go for a lengthy skate, even given that rugby's judicial processes are to justice what Wall St is to world humanity. The injustice to Wales was magnified as the blow was delivered in the first minute, reducing their squad by one for virtually the entirety while the All Blacks retained 15 on the field. What a sham.
In this day and age, 14 All Blacks versus 15 Welshmen would represent an even contest, and the sight of Hore leaving in disgrace so early would surely have lifted the crowd and the team towards a famous victory.
Wales certainly deserved the chance, and while the All Blacks were often impressive and way the better, the madman Hore turned this into an ill-deserved triumph.
The All Blacks' orchestrated brilliance allied to an almost relentless composure is breathtaking to watch, but they left a hollow feeling this time.
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