Additionally, I'd still say this is a second Jutland. Costly to both sides (though in favour of Britain this time) but not a war deciding battle by any means. The British were still forced to break off their pursuit and forego attacking the Japanese landing sites after all. Lowering the overall lethality of the battle may have taken away Japan's one gotcha moment, but it also made the war just as hard for Britain in the short term and a tad harder in the long term.
Thank you for answering. I disagree with this paragraph especially and the bolded part most of all. In the update re: the land battles of Borneo/Brunei you wrote. "They didn’t have long to ponder it as they unexpectedly came under naval bombardment in the late afternoon as British cruisers moved in to assist. With morale plummeting now that it seemed the British, not the Japanese, had command of the seas, the 16th Division withdrew during the night."
So it seems like the British were able to attack the Japanese landing sites? Or was that a different sea-based bombardment? Either way, British cruisers operating that close to the IJA means the IJN screwed up in a huge way. If the IJN can't even protect the area next to their army then what good are they?
The IJN as I see it has failed on three fronts
A - They failed to defeat the British in a Decisive Battle. In fact, that Decisive Battle was a Decisive Loss
B - They failed to prevent British ships from bombing their landing sites as cited above, leading to the army withdrawing from Borneo
C - They failed to prevent British subs from attacking their troop/supply convoys
What did they gain? Nothing. The British still have numeral supremacy in the theater. In fact, they probably out-ton the Japanese even more now than before, even if you remove both sides ships that need fixing/refitting. Calling this a costly battle is technically true but it is masking the situation.
Yes, the 1,647 dead sailors and nearly a thousand injured ones are losses.
Barham, Hood, Repulse all needing to be repaired/refitted are losses. The Hawkins-Class Cruiser being sunk is a loss. But compare to what they won - two sunk battleships, two more being repaired, a damaged carrier, twice as many casualties among naval personnel, all while operating with impunity in the seas as the IJN can't even protect their army from being bombed at this point. Any British leader will take that tradeoff any day of the week and twice on Sundays.
This is both a tactical and strategic disaster for the IJN. They not only failed at every single one of their goals but failed in a spectacular way. It is going to be exceedingly hard for the IJN to recover if they can't even defend their army from bombardment. Couple that with the Brits having the Japanese codes and there's almost no way Japan recovers from this battle.