@Imperious:
1. Because Cruisers are the fastest ships and have the greatest range. They can travel long distance without refueling.
Facts not in evidence.
USN Wichita class had a speed of 33 knots and an operational range of 12,000 mi. Iowa class Battleships had a speed of 33 knots also and a range of 14,000 miles.
German Hipper class had speed of 32 knots and operational range of only 7,000 miles while the Bismarck had a speed of 30 knots but with a range of 8,500 mi.
Japanese Tone class did show good speed at 35 knots, but only 8,000 mi operational range. Yamato class battleship had a speed of 30 knots and range of 8,000 mi.
By comparison of speed the Japanese Yugmo class Destroyer had a speed of 35.5 knots and the US Fletcher class Destroyer a speed of 36.5 knots. Operational range was limited to about 5,000 miles though.
Also by comparison US Essex class carriers had a speed of 32.7 knots and an operational range of 20,000 miles!
Cruisers by operational range do not deserve any advantage over Battleships or Carriers; they had no more or less. While their tactical speed was in the 32 to 35 knot range, it was certainly not any advantage in a strategical sense compared to 30 to 33 knot battleships and carriers.
And while cruisers were well armed for AA role, most battleships had as many or more AA guns.
There is no logic for cruisers moving faster on a strategic level.
Kim