I can tell you that they are 2 totally different types of bikes but with many similarities.
Sold my 2016 GT because I was sick of the driveline lash, the heavy clunking into all 6 gears at any RPM and the thrashing of obnoxious drivetrain clatter and noise it developed after about 6 thousand miles or so. As I stated in another post, I absolutely fell in love with that bike. The performance, handling, feel and fun factor was everything I dreamed it would be and more. I saved and waited to buy one and loved them since they came out for 2012 here in the U.S. But in the end, these issues started to ruin the overall experience for me. Tried to live with them for awhile. Been riding for 36 years. It just made me sad, putting up with these characteristics that FOR ME, I could no longer justify.
So now I was at a bit of a crossroads. Been the sport bike and hyper bike route in my youth. Tried the sport touring thing with my Aprilia Futura and later Concours 14. Then totally threw a wrench in it and tried the bagger lifestyle on a budget, riding a Kawasaki Vulcan Vaquero for awhile. When it came time to finally jump into a K1600GT, I felt I had experienced just about every type of bike for the pavement, sans an adventure bike (too short for those). So where would I go from here? What bike would give me something from all of the styles I enjoyed in the past? Not a Harley guy. Was digging some of the new Indians but never felt totally happy with a big V-Twin. Just not into the vibration and felt they were overpriced. Was digging the new Triumph Rocket 3 but I knew that the lack of fairing & windscreen would wear me out. I thought that the new 2018+ Wing looked pretty cool; a lot less like a Grandpa bike and somewhat modern and sleek with all of the new angular lines in the body work. And I knew the engine was bulletproof. Figured, what the heck. Go check it out and get in a few test rides.
Well it simply won me over. Power like my Connie or K bike? Well no but it sure does have tons of ba**s when in sport mode. So much torque right from idle and pulls like a freight train. More than enough to keep me happy and still concerned about protecting my license. Handling. Turns in a little slower but not much. Noticed when tire pressure is correct its pretty darn good. Not lightning quick but it belies it's size, weight and length dramatically. I'm so comfortable with it now that I find myself riding it very aggressively in the twistys. I get it down there, with no chicken scratch on the tires to be found and I have yet to scrape so it's not as low as you think. The radio, XM, Car Play, Android Auto and NAV setup is light years ahead of the K bike. The dash looks similar to an Accord but to me that is what makes it great. Plenty of real estate to show you everything at once. No need to scroll through stuff just to see the radio station, or tire pressure, or similar stuff. It's always on screen in it's own dedicated place. It's got every feature imaginable and for me that matters. I tend to ride longer and it beats my old K bike hands down in that department.
It's a different kind of experience. You sit completely upright so by default it's very comfortable. There is enough spirited power and handling for almost everyone except die-hard Busa and ZX14 fans in my opinion. It's not a bike you can decide on with a short ride. You gotta ride it for some time and understand the different ergonomics due to riding position and angle. You sit more forward on the bike than the K or any other bike to be honest. So that changes the feel and finesse in the turns. You need time with it to gain understanding and confidence to appreciate what it has to offer. Sure, storage capacity is down but for me. I went from a GT to a Tour so I now have a top case. And if not enough space for multi day trips the optional luggage rack will make up for it.
Just wanted to say it's a fun and cool bike. It's just different. For me it gives me plenty of power, handling, comfort in spades, refinement and technology to make me happy without the compromises I was experiencing with my GT. Don't automatically think less of it. It's nothing like the old Wing. Some say it should be called the ST1800 in reference to the old Honda ST1300 sport tourer. It's quite a blast to ride and own.