the issue with hitch carriers nowadays is the range of products available and potential applications:

50cc pitbike on a 1.25"/prius driven 2 miles <-----> 600cc supersport on a Versahauler on an F350

there are pictures of both ends of the spectrum online. whether or not it works is mostly anecdotal and the issue you have is the vehicle: an RX330 is a crossover type vehicle. It's totally okay to carry bikes on the lighter end of the spectrum, which is mostly dirt bike and mini''s...it is NOT okay to carry a 400lb sport bike on the back of that. Your best option is a Kenda trailer.