WOW - you are going to start a war with those questions!! I will throw my $.02 in before the shooting starts.
I have a 2012 Fuzion FZ310. I had a 2011 Ford F250 with air bags and a sliding 5th wheel and only 18k miles on the truck. I pulled this Fuzion twice for a total of maybe 400 miles and decided to trade a perfectly good truck because I did not feel safe with a 3/4 ton single rear wheel (SRW as opposed to a dual rear wheel DRW) tow vehicle for this massive RV.
To answer your question - YES, a 3/4 will pull that Fuzion. You will HAVE to use a sliding hitch though if you turn sharp at all. If I did not slide my hitch, I could bring the RV into the truck going forward at full turn radius. Sliding the hitch did fix this and the rig was very manuverable.
You MUST install an air bag system or similar to boost up the truck as the pin weight on a Fuzion 310 is about 2800 lbs. BEFORE you even put blankets on the beds. Loaded up for a camping trip will get the pin weight over 3000 lbs and a 3/4 ton truck can not handle this without help.
Lastly, a gasoline engine may pull this rig but you will want a diesel as soon as you can get one. The Fuzion is over 13 feet tall and developes a lot of wind drag at speed. Gas motors just can't cut that kind of load not to mention the transmissions they put in a lot of gas burners.
The Fuzion is a very nice camper. So are many other brands too. NONE of them are worth the price we pay however but as long as we buy them, they will sell for ridiculous money!!
I compared 3 brands I liked and selected the Fuzion after seeing minor things in the other two that kinda turned me off. You may like a Cyclone better for any number of reasons. It's all about what you want and like - not me or any other poster here. We are not going to make your payments so get the one you like. Most are about the same as far as quality goes (they suck). I do believe the JayCo line is prolly best quality but I'm sure others will disagree. JayCo has best warranty. The floor plans are nice too.
If you buy any new toy hauler in 5th wheel you will prolly be wanting/needing a newer diesel truck very soon. You should go forward knowing that. If you get to that point, think strongly about a couple extra thousand bucks and get a dually.
Good Luck and Happy Camping!!