MangyElf, your approach seems very reasonable for converting WH over to TW. I dont, nor have i, played WH so i dont knwo what kind of statistics you are actually trying to convert.

But i have played and toyed with TW statistics.

if i may throw some suggestions out there.

before even considering to assign numbers or find equations for WH units i would suggest getting a list of all weapons in WH and all armor and shields. then using WH stats, put them in order of least lethal to most lethal, least defense to most defense. somthing like...

Dagger
Short sword
axe
staff
mace
Longsword
bastardsword
broadsword
spear
2-handed sword
battle axe

Leather
Padded
Hardened Leather
Partial Light Mail
Light Mail
Light Brigandine
Partial Splint Mail
Partial Heavy Mail
Splint Mail
Heavy Splint
Heavy Mail
Heavy Brigandine
Breastplate
Light Plate
Partial Platemail
Platemail
Heavy Platemail
Full Platemail

Buckler
light shield
Heavy shield
tower shield

etc. etc.

I dont know all the equipment in WH but this is just an example. then assign WH numbers to those items. if a dagger does 1-3 damage in WH then assign it 3 etc. if WH is like D&D2nd ed. and armor values are in reverse then simply reverse the number. as in leather provides 9 and plate provides 0, reverse it so leather provides 1 and plate 10. then if your using magical based items add the magical property. +1 +2 +3 etc.

someone mentioned wounds and toughness. i assume wounds are similar to hit points. try converting wounds to stat_health. this is somthing that will obviously need to be tweaked, but a general unit in TW has 2 health and most other units 1. there is no reason why you cant try increasing that number to 4 or 10 even (battles will surely last longer, but if you also have higher values for attack (like 35) then there is no problem right?) its somthing that just needs testing on the battle map.

toughness sounds like somthing i would be associating with armor rating (seeing as it would still aid the unit when shot at - defense skill does not apply when shot at)

if you try using the WH stats first then you can comprimise from there to balance units out. i dont know what other factors you have in WH that people keep saying cant be converted. but everyhitng ive read so far in this thread look slike oit could basically be converted straight over.

as for magic attacks, well, they would be balanced in the WH universe to work with the values in WH already, so converting them would be easy.

on to mounts. does WH use any mount other then horses?... if not then once again get a list of your mount types, pony, barded horse, work horse, war horse etc and simply convert WH stats to each horse type. (horses should give defense aswell as add charge bonus to the unit). if there are no stats in WH for horses you can simply start with 2-4-6-8 (for defense and charge) - experimentation will ofcourse yeild results to balance them.

if WH uses strange mounts like lizards or dragons or whatever then you can assigne them as camels and elephants to use the mount_effect that TW uses where horses are afraid of camels etc. (i belive that is hard coded, so naming your lizard or dragon a camel would only be in the files, in play the player would still see the name dragon or what have you).

armor upgrade levels. in TW they range from 1-6. each level gives the unit 1 point to defense. this is not hard coded, you can have 12 upgrade levels, or 18. then assigne 2-3 to each smith. in a mini mod i tried using for awhile i had 18 upgrades, 3 for each smith level. so a leather tanner would upgrade from unarmored-leather-padded-hardenedd leather. each unit can only have 3 upgrades (that is hardcoded). take spear militia, you might want them to start unarmored (o), but be able to upgrade to light mail. there upgrade leves would be (1,3,5). i found this approach made upgrades very valuable. it all depends on how many different tyoes of armor you plan to have. i assume chaos armor would be the highest and there fore only availabe to a select few.

the general idea is to get a list of all items, upgrades, mounts and assign them values straight from WH. i dont recommend basing any unit off of vanilla seeing as you are playing with a fantasy universe so your stats are going to be completly different... then try playing with those stas on the battle map (even if the unit has an attack of 50) try it. i think the limit is either 99 or for some reason the number 65 comes to mind.

ive done some statistical conversion before, id be happy to help out, but i dont have any WH reference material.