Join Date: Jan 2009
Location: Worcestershire, UK
Both take 6 saves since the combat res affects both of them equally- its the same case as if both units were not fearless and lost: if they lost by 6 and were Ld 9 originally both units suffer a -ve 6 modifier to their Ld (so down to Ld3) rather then taking a total of 6 to their Ld modifier (which would take them both down to Ld6).
It sounds harsh when looked at for fearless units alone, but it makes sense when you reflect on the standard case.
The moral of the story is that if you are fearless you dont want to be losing combats, especially when you shove lots of units into the same combat (but then losing combat by a significant amount is a damn sight nastier if you arent fearless... unless your marines in which case your super fearless, otherwise known as ATSKNF).