When two boats share the same hull type — in this case both the Landau Atlantis 210 Cruise 2012 and the Landau Harbor Cruise 20 2011 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
Size is the most obvious dividing line here. The Landau Atlantis 210 Cruise 2012 measures 21,0 feet overall (2012), giving it roughly 19,0 additional feet of deck space compared to the Landau Harbor Cruise 20 2011 at 2,0 feet (2011). Weight tells a clearer story for trailering families: the Landau Atlantis 210 Cruise 2012 tips the scales at 2 065 lbs — 366 lbs more than the Landau Harbor Cruise 20 2011 at 1 699 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 90 hp for the Landau Atlantis 210 Cruise 2012 and 90 hp for the Landau Harbor Cruise 20 2011. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Landau Atlantis 210 Cruise 2012 carries 33 gallons versus 26 gallons in the Landau Harbor Cruise 20 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Landau Atlantis 210 Cruise 2012 is rated for 10 passengers, while the Landau Harbor Cruise 20 2011 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Landau Atlantis 210 Cruise 2012 could be the deciding factor.
One place where both boats are genuinely identical is tube construction: both run 23 aluminum tubes at 21" diameter. That shared spec means stability and buoyancy characteristics are closely matched — the ride difference you'll feel between them comes primarily from deck length, weight distribution, and motor choice.
Bottom line: Choose the Landau Atlantis 210 Cruise 2012 if your priority is putting more people on the water — it handles 10 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Landau Harbor Cruise 20 2011 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.