BBEdit uses 'com.barebones.bbedit' whereas TextWrangler uses
'com.barebones.textwrangler'.
Using 'defaults read com.barebones.textwrangler | grep
BalanceIncludesDelimiters', there DOES appear to be an entry for it:
"Editor:BalanceIncludesDelimiters" = 1;
So I'd guess that you'd just use the same format as what you used:
defaults write com.barebones.textwrangler BalanceIncludesDelimiters
-bool YES