Both the World Cat 320EC Express Cabin 2010 and the World Cat 330TE Tournament Edition 2010 are catamaran designs, both built in fibreglass, so 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?
On paper these two are close siblings in the size department - World Cat 320EC Express Cabin 2010 at 32,2 ft versus World Cat 330TE Tournament Edition 2010 at 34,0 ft. Weight tells a clearer story for trailering families: the World Cat 320EC Express Cabin 2010 tips the scales at 10 900 lbs - 500 lbs more than the World Cat 330TE Tournament Edition 2010 at 10 400 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 - 700 hp for the World Cat 320EC Express Cabin 2010 and 700 hp for the World Cat 330TE Tournament Edition 2010. 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 World Cat 330TE Tournament Edition 2010 carries 300 gallons versus 260 gallons in the World Cat 320EC Express Cabin 2010. 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 World Cat 330TE Tournament Edition 2010 is rated for 10 passengers, while the World Cat 320EC Express Cabin 2010 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the World Cat 330TE Tournament Edition 2010 could be the deciding factor.
Bottom line: Choose the World Cat 330TE Tournament Edition 2010 if your priority is putting more people on the water - it handles 10 passengers and at 34,0 ft it has the deck room to back that rating up comfortably. The World Cat 320EC Express Cabin 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 9 that costs less to run day-to-day.