We'd gone over this issue in a few other threads>
1 Razordon = 4.5 effective wounds with 5+ unsaved wounds going to remove handlers and 5+ AS, T4 means harder to kill though
1 units skinks = 10 effective wounds plus a parry save on top of 5+ AS.
Basically, on average, 4.5 effective wounds at T4 is comparble to 6.5 to 7 T3 wounds. This means that it is harder to use shooting or magic to clear out a unit of skink skirmishers than a single razordon to remove the "annoying" redirector unit.
Razordon has one artillery die (re-rollable if stand and shoot) of shooting compared to 10 guaranteed poison shots by skinks. The razor can misfire (and eat handlers) when shooting normally, but one loses shooting as a skink skirimsher unit suffers wounds whereas the razor shoots until the last wound on it is suffered. BS3 Poison shooting at S3 tends to be superior in effectiveness to BS3 shooting at S4, especially with no multishot penalty for single shot javs., except when facing high AS (but not 1+ AS) units.
Skink skirmishers can march and shoot and with javs are quick to fire with 12" range; Razors can now only move and shoot, quick to fire, with 18" range. The difference in range is not significant when one considers that as redirectors, they need to get within 12" or less of the target units to be effective rediirectors. The problem for razors and where they lost out is the inability to march and shoot limits their effectiveness as redirectors relative to skink skimishers with javs. Also, skink skirmishers are much better at screening and protecting more valuable units from BS shooting and as redirectors due to their much greater width.
In combat, razors get 2 WS3 (with fear) S5 attacks and 3 WS2 S3 attacks and a stomp if the razor survives to the end of combat, whereas skink skimishers get ideally 10 WS2 S3 attacks. Only 2 WS3 S5 attacks is not enough to make the razor a really effective redirector threat of doing damage in combat and being a redirector means getting charged by something often like to kill the razor outright. Maybe razors making effective flankers for tying down units by hitting a flank and gaining net CR (giving up fewer wounds than the unit takes and gaining a flank bonus) in the process., but that is not a redirector role.
Given all of the above, unless one expects to face an empire army that is high armour save and cav focuses or a similar Brett army or maybe something similar in WoC, skink skirmishers are a much better value for the points for use in shooting and stand and shoot plus redirector and screening roles. Even then, in order to make razors truly points effecient and useful in such a role they really should have AP on those barbs, otherwise you are almost better off with Krox, cowboys, or Cold one cav units for the points than the equivalent number of razors if you need that kind of hitting punch.
