This would be Watchtower's spin:
The Aid to Bible Understanding book intentionally left Deborah out of the list of Judges.
1980 Watchtower explained why
QUESTIONS FROM READERS
● In view of Judges 4:4, can Deborah be viewed as one of the judges of ancient Israel, along with Samson, Gideon and others?
The Bible account at Judges 4:4 reads: “Now Deborah, a prophetess, the wife of Lappidoth, was judging Israel at that particular time.” Earlier, the account at Judges 2:16 says: “Jehovah would raise up judges, and they would save them out of the hand of their pillagers.” Thus the main work of a judge would be to save Israel from their enemies. It appears, then, that the phrase at Judges 4:4 about Deborah “judging Israel at that particular time” does not mean that Deborah was usurping the place of a man and that she was fulfilling all the duties of a judge in Israel. Unlike Samuel, Gideon or other judges she did not judge all Israel and act as their deliverer or “savior.” In fact, at Nehemiah 9:27 the term “saviors” is used rather than “judges.”—Compare Judges 3:9, 15.Being a prophetess, Deborah told Barak what Jehovah’s will was in the matter. She was used by Jehovah to call Barak to serve as judge for the overthrow of the enemy. Barak served as the “savior” provided by Jehovah, not Deborah, although Barak asked that Deborah go with him. So it is most unlikely that Deborah performed all the duties usually associated with the office of a judge in Israel, the most prominent of which was leading the tribes in warfare against Jehovah’s enemies.Thus, while Deborah can properly be described as a prophetess, it is only in a general sense that she was doing a measure of judging in Israel; she was not taking the full place of a male judge in Israel. Judges 4:5 says: “She was dwelling under Deborah’s palm tree between Ramah and Bethel in the mountainous region of Ephraim; and the sons of Israel would go up to her for judgment.” As for the matter of giving the Israelites Jehovah’s answer to difficult problems that would come up, this she could do because of Jehovah’s spirit being upon her. In contrast, Barak certainly was one who effected deliverance for the Israelites. The reasonable conclusion to draw is that Barak was a judge in the full sense of the word, and this is in accord with Hebrews 11:32, where he ranks among the judges of ancient Israel. Thus the book Aid to Bible Understanding, on page 980, in listing the judges of Israel, does not include Deborah."
