A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
If The Seventh Tower targets a bowed Crab personality to compare to an opposing unit, is that force printed or is it considered 0 Force still bowed.
Relevant Text - Battle: Target one of your Personalities and discard a card: Destroy a target unit opposing him with less total Force than your Personalities Force.
A bowed card in a unit retains its own Force stat; its own Force is not reduced to zero from being bowed.
You can find more about that here.
To address your specific example, the Personality's Current Force (which is not affected by him being bowed) is compared against the Unit's total unit force (which is affected by the cards in the unit being bowed).