Why the Mediterranean posed a different risk from home waters

Which fleet was most important to Britain during the period of the War of 1812?

The Mediterranean receives particular emphasis because French forces could gain a local advantage there, whereas Britain held greater numerical superiority in home waters.

The Mediterranean is the first answer when the discussion asks which fleet mattered most to Britain in this period. Home waters also required attention because France remained a nearby enemy. The comparison then emphasizes Britain's stronger numerical superiority at home and the risk that a French concentration could gain local superiority in the Mediterranean. That difference informs the argument over the role of an early British ironclad.