Yes, the Russians are dead and the units they’ve taken with them are generally on par, IPC wise, of those taken by the US BB. My argument is the long range ramifications of JP are at least two-fold worse for leaving that BB around, up to and including fighting for the big money in the SW Pacific.
Firstly, if 50 is cleared but not taken… depending on what’s in that SZ, it’s vulnerable to BB, bmb, ftr. It’s not entirely appetizing, but if it’s just the BB, I’m going to take my shot to kill it in 1 turn at 0 value loss to America. I’d also be tempted to just send the ftr and bmb at it, but that’s probably a poor risk as you’re giving up anything that stays there, anyhow.
Realistically, anyone who rolls the backbone of a good naval fleet across the world and out of action for a couple of turns needs their head examined. Japan has told the Americans what they’re going to do with their game, leaving them a nearly fully functional fleet in the Pacific. I mean, did you even send anything at SZ 56? If not, the fleet’s already going to be on par with whatever JP wants to throw at them. If not, it’s still VERY much a threat. That fleet, in particular could be REALLY effective gathering in SZ 46 (2 inf if trn 56 is alive, 2bmb, ftr on sol from US, 2 inf from brit) and shipping out from there. My first turn US answer to that is 3 subs, ftr and a bmb dropped in Pacific theater. Sure, that fleet inf 46 attack able by many planes in 61 and any ships that are in 50, but there are a few key points to this. Any aircraft wanting to attack this hearty fleet (BB soak, 2-3 destroyers before you’re doing any good dmg) from SZ 62 will FORCE a carrier to stop in sz 51, in range of the build of US, and the bmb and ftr on land in the solomons. Sol’s in a bit of danger and loses SOME punch if the US trn isn’t there, but if JP wants to send every unit that can reach a 0 cost territory in turn 2 after sending a ton of their units at a 1 cost territory in turn 1, they’re just not doing acquiring the wealth they NEED to compete with the US. Along with beginning to chip away at the substantial unit advantage JP has on them int he start,
Of course, playing without NOs allows you to ignore Phi and by extension, US, a bit more. I do seem to remember this was all predicated on you saying you play without NO… and when Haw is worth 6 to JP turn 1, Phi is worth 7 to the US and is part of another NO for JP, they tend to get ignored less. Still, no NOs tends to favor the Allies a bit more, and that’d make fighting for big money territories like EI and Borneo all the more appealing for the US/UK.