Note: A bit of a comparision between some proposed ships of the USSR, particularly their fast battleship the Sovestky Soyuz and an Iowa class inbound, if you are well informed about the two ship classes don't read the following section but simply skip to the end, but if not go right ahead, as bias free as possible, stating just the facts
Still, I would certainly love to see Jersey go barrel to barrel Sovetsky Soyuz class, Kronshtadt class, or Stalingrad class ships, particularly the Sovetsky Soyuz class as it's pretty much the USSR's version of an Iowa class Fast Battleship, four were laid down but weren't finished due to WWII kicking off. Mainly because, we get to find out how well USSR's proposed and even laid down battleships but never finished would stand up to an Iowa class, as a matter of fact let's compare a Sovetsky Soyuz class and an Iowa class, I mean the Sovetsky Soyuz class would have had pretty good armor if USSR Naval Armor Production was up to snuff. Armament is about the same nine 16in/50 caliber shells, but the Soviet one is much faster in the muzzle velocity, hurling a 2,443 pound AP Round at some 2,854 feet per second which is rather insane for a gun of that size, but it fires a lighter round and suffered from dispersion problems due to low quality powder and shells -not sure if the Abyssals would have fixed that issue-, but it's secondary battery has a metric ton of dakka, sadly it's sorely laking in the AA department. On the flipside, Jersey is faster, has better armor -while I do realize that both an Iowa class Battleship and a Sovetsky Soyuz class have pretty much the exact same thickness of armor an Iowa class has Special Treatment Steel which makes it's armor better-, arguably better main battery firepower, a larger AA Battery, twice the range, more manueverable, Radar GFCS meaning she's more accurate with her gunfire, the absolutely incredible Ford Mk IA Gun Fire Control Computer meaning she can correct her fire better.
Bottomline, depending on how the Abyssals modify a Soviet Sovetsky Soyuz class Battleship, an Iowa class would either stomp one into the ground or they would be about even in terms of capabilities, with the exception of first salvo capability and fire correction capability that would go to the Iowa class, but a Sovetsky Soyuz class is bound to be just as tough as an Iowa class, it certainly has that capability, but it's Secondary battery is even more potent., at least it seems on paper when compared to an Iowa class Fast Battleship, compared to a Yamato class not so much, needless to say, you are in a destroyer or a destroyer girl and you don't have real long range fish, making a torpedo attack on this thing would be suicide.
Hell if you compare a Sovetsky Soyuz and an Iowa class side-by-side via Shipbucket, they look very similar, three gun turrets mounting three guns each, two funnels, somewhat similar looking bow, somewhat similar looking conning tower, aircraft catapult mounted aft granted that's where most ships mounted their aircraft catapult. The only differences is the Sovestky Soyuz class has four anchors forward, more turrets with it's secondary armament adorning it's sides, different funnel design, little shorter Conning tower, and a few other things, most notable is that the Sovestky Soyuz class is a few feet shorter than an Iowa class Fast Battleship, but it is wider and has less draught than an Iowa class.
Comparison ends here
Besides Jersey did say this about sinking Panzerschiffs "Since when is killing Nazis ever the wrong option?" I wonder what she might say about shooting at Abyssal Communist Ships? That is one question that sort of needs answering. Not to mention, it would probably be a rather badass fight between the two, particularly if the secondaries get involved, with shells filling the air between the two ships with such intensity you could could figuratively speaking walk on it from one ship to the other.
Also, to tell you the truth, while Aircraft Carriers are awesome in terms of force projection, nothing says "Speak softly and carry big stick" like a Battleship does. Because when it comes to bombarding your enemy their is making him hide in a fighting hole aka Foxhole and making him want to be anywhere but that Foxhole when under bombardment. Not to mention, they also look better, particularly in the WWII Layouts where they look like they can where they want within reason, do what they want, and simply not give a fuck.