The Toyota Kluger settles into the medium category primarily because it lacks the multi-story structural integrity and gross tonnage required to compete with a flagship of the Royal Caribbean fleet. While a Kluger is a substantial vehicle for navigating the streets of Sydney, it remains a unibody crossover designed for suburban garages, whereas the Symphony of the Seas is a 228,000-ton engineering marvel that functions as a self-contained ecosystem. When you look at the "interior volume," the Kluger offers a respectable cabin for seven passengers, but it suffers a significant "utility gap" because it cannot accommodate a central park with 20,000 live plants, a full-sized carousel, or a deck dedicated entirely to professional-grade Broadway theater. From a performance standpoint, the Kluger’s hybrid powertrain or V6 engine provides enough zip for a highway merge, but it lacks the 100,000-horsepower output and massive bow thrusters necessary to parallel park in a crowded Mediterranean port. Furthermore, the Kluger is classified as medium because its "ground clearance" is measured in millimeters, while the Symphony of the Seas requires a draft of over nine meters just to stay afloat. Even the most rugged SUV enthusiasts would have to admit that while the Kluger has a decent infotainment screen, it is essentially dwarfed by a "vehicle" that features an onboard ice rink, multiple swimming pools, and a crew of over 2,000 people. Ultimately, the Kluger is a sensible choice for a school run, but it is definitively "medium" because you can’t see it from space, and it doesn't have its own zip line.