Why a Gladiator-class ship is not a direct sea-control-ship analogue

Is the Gladiator-class Star Destroyer the Star Wars equivalent of the American sea control ship?

Not directly; it is closer to a small general-purpose escort, while fictional scale and classification prevent a clean historical equivalence.

The panel does not accept a direct one-for-one comparison between the Gladiator class and the historical American sea-control-ship idea. Within Star Wars terminology, the roughly 600-meter vessel appears to be a small all-round or escort platform, and even calling it a Star Destroyer seems questionable beside kilometer-scale ships. Fictional troop complements and force categories also use a scale very different from modern naval organizations. The useful comparison is therefore functional and approximate: a general-purpose escort can resemble a sea-control ship in some roles without sharing its historical requirement or classification.