For main battery fire power, I would rank the Baltimores at the top. Why not Pensacola, Takao, Mogami, or Myoko (the ten-gun ships)? Pensacola fired a light shell, and her FC system was not up to later standards. The Japanese ships also fired a light shell, the shell itself was very poor against FH armor, and the gun operation was far slower than intended. On the other hand, Baltimore was the only class to have the super-heavy shell. Her broadside was 3015 lbs, greater than Takao's 2775 lbs. Or you could pick the Deutschlands, which were official reclassed as heavy cruisers during the war. They had a 3968-lb broadside, not to mention the 15cm secondaries. The weakest "heavy cruiser" would be Krasny Kavkaz, but that's not really fair of me. The little Almirante Brown had a broadside of 1200 lbs. The Furutaka types and Britain's "Cathedrals" would be next, I guess. All the US wartime cruisers had twelve 5in DP guns except the Atlantas that had sixteen. British cruisers didn't have 5in guns; their heavy AA gun was 4in. The Didos came on line with 5.25in guns, but these were pretty bad as AA weapons; two units had 4.5in guns, which were actually superior. Algerie certainly deserves attention among the best treaty ships. Personally I'd put Wichita maybe a touch above her. The only Japanese ships which were close to the treaty tonnage figure were the Furutaka types. If Portland deserves consideration, then New Orleans certainly does.