Street Samurai can finish a battle, taking several actions, before some runners get their first action. I could go out for dinner at the start of a Combat Turn, come back 90 minutes later as the last enemy drops and say “At count 6 my magician dives under the table.”
Pistols get just one shot on your initiative count, until you buy a second book (Street Samurai Catalog, maybe) and upgrade to a Reactive Trigger and can shoot twice on your turn.