How many Talos does it take to kill a Wraithknight?

Lets assume they have the Ichor Injectors and they manage to get into combat!... Can the Corpsethief do it? Two units of three?

Okay, on the charge each Talos has 5 attacks, hitting on 3+, wounding on 2+ (ID on a 6), at AP2. Assuming no invulnerable save that equates to 1.11 wounds from the ID (no FNP) and 1.48 other wounds, for a total of 2.59 unsaved wounds (after FNP). So you'd need 3 Talos to kill one WK off in close combat. The WK swings first (I5) so he's going to do 1.11 unsaved wounds (after FNP) before the Talos get to hit back but that's not enough to kill one. I'm assuming he doesn't have the D close combat weapon.

Ichor Injectors tilt the balance quite a bit.

If fighting a Shooty wraithknight, 2 talos (that makes it into combat, that is the tricky part) should kill the wraithknight. 1 can alone if a bit lucky.
Each have 4 attacks.
Talos hits on 3's, knight on 4's
Each wound on 2's

talos gets a 5+ feel no pain save.
So does the knight EXCEPT when you roll that wonderful "6" to wound. Then you do 1-3 wounds with no save of any kind whatsoever.

So knight swings first, hits twice, wounds twice, you save one if lucky. You still live even if you dont.
Talos hits 3 times, wounds 3 times and could kill it if one of those wounds is a "6"

So two talos should be able to kill it with no difficulty.

Against a HTH wraithknight... you make it there alive, but die ever so quickly after that. It would take a full corpsethief to kill one.

700+ points to kill a 295 point model.
Not cool.

I would feel safe with a corpsethief charging the wraith knight. Although I don't think it is likely that the eldar will let you get that close to the knight. So a big if there

I did run a corpsethief and a wraithknight in a 2k tournament a few months ago. That was fun!