"the factors of type and combat capabilities determine which units are able to destroy which other units in skirmishes."

(quote from original SC rules)

My question is:

Can lonely assist units present in the area destroy:

1) workers (when oppotent loses resource card)

2) bases

I find especially destroying bases stupid - most of assist units in video game are able to destroy units, but not entire bases. In addition, they usually can't be killed in board game when you are the defender.

It almost happened in my last game, my base survived only because of terrible mistake of my oppotent (he forgot to draw all Irradiate cards from tech deck after he had bought them).

Wouldn't be better to accept the rule, that in such cases (when only attacking assist units survived and there's an enemy base in the area) the defender has won and attacking side must retreat?

EDIT: Sorry for repeating that topic: http://www.fantasyflightgames.com/edge_foros_discusion.asp?efid=6&efcid=1&efidt=92533 , i just spotted it just now

They can. An assist unit present in the area of a base or in one that contains worker kills said in the regrouping phase.