Well, of course it doesn't shift exactly the same as a V160. The T56 Magnum is made by different company and has quite a bit different design, especially when it comes to the shifter.
If you want to experience the "feel" how the T56 Magnum shifts, you can test drive a 2010+ camaro SS, 2008-2013 Corvette, 2013+ Viper, 2007 Mustang GT500, or 2009+ Challenger. The same gearset is used in these factory cars, and this transmission is widely used by FORD, GM, and DODGE! Also, you may notice a recurring theme with all the car in the above list... High Performance!
The shifter is your connection to the car's heart, and you become very used to how the feel of each shift. I got very accustomed to the V160 after racing/driving it for 6 years, so when I first drove my car with the T56 Magnum I didn't love the shift feel. But after driving it for a short time, I got used to the feel and it became the new norm. I would describe the V160 as having long, loose throws. I say "loose" because the tripod design can give somewhat of a sloppy feel... which is totally different from the magnums integrated shifter, which has tight, super short throws.
I think this is why most of the auto guys who swap to this trans have no issue getting used to the shift feel. Only the guys who have driven the V160 for long periods like myself have gotten used to that v160 style shift feel, and at first may not like the change.
There are some people out there who say you degrade the value of your supra by putting a T56 Magnum in it. They believe the Getrag built V160 is some sort of God's gift to the world. I will admit, I AM one of those purists/weirdos when it comes to the 2JZ powerplant, which is the heart of the car. The TOYOTA made 2JZ quite possibly is God's gift. The Getrag made V160, while it is a great gearbox, it is just that... a gearbox. Swapping it out causes me no grief. Especially when it involves swapping it out for a trans that is capable and currently in production. I don't see the Supra purists having issue the factory auto guys who swap to a TH400.
Here is an example of the "clunky" T56 Magnum transmission on the highway LOL. This is Kyle's MKIV Supra from FL, he swapped from a factory auto to a magnum.