How a Royal Navy battlecruiser compares with Alaska

How might Royal Navy battlecruisers have regarded the Alaska class?

As a worthy opponent: Alaska could have heavier armour, but the British battlecruisers generally carried larger guns.

The Royal Navy would probably have viewed Alaska as a worthy opponent rather than a conventional cruiser. Alaska could carry somewhat heavier armour than some British battlecruisers. The British ships generally mounted larger-calibre main guns. Protection and hitting power therefore point in different directions instead of producing an obvious duplicate design.