Both the ThunderJet Bull Dog 20 ft. 2013 and the ThunderJet Luxor 2012 are modified-V designs, both built in aluminium, 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 - ThunderJet Bull Dog 20 ft. 2013 at 20,0 ft versus ThunderJet Luxor 2012 at 19,0 ft. Weight tells a clearer story for trailering families: the ThunderJet Bull Dog 20 ft. 2013 tips the scales at 3 300 lbs - 900 lbs more than the ThunderJet Luxor 2012 at 2 400 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 - 320 hp for the ThunderJet Bull Dog 20 ft. 2013 and 320 hp for the ThunderJet Luxor 2012. 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. Both carry nearly identical fuel loads - 48 gal and 48 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The ThunderJet Bull Dog 20 ft. 2013 is rated for 6 passengers, while the ThunderJet Luxor 2012 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Bull Dog 20 ft. 2013 could be the deciding factor.
Bottom line: Choose the ThunderJet Bull Dog 20 ft. 2013 if your priority is putting more people on the water - it handles 6 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Luxor 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.