Yes, one could conclude that the 2JZ has some obvious advantages over the VG. This STILL doesn't not change the fact that it is a "better" car. If you take every single defining factor of each car and compare them, there's entirely no way to come out with an objective answer. Exterior and interior styling is purely objective. A person could like the small 2seater style of a Z or they could prefer the slightly more open 4 seater style of the Supra. Someone could like the sharp lines of the Z or they could prefer the smouth bends throughout the Supra. This may seem like I'm trying to say it comes down to which looks better, but I'm just trying to prove that some people prefer something even if it is technically a "disadvantage". Personal preference will always come into play and that will decide when a person chooses one car over another. You can never truely state that one car is better than the other, just as you can never state a Butterfinger is better than a Snickers. (Excuse the childish analogy :) )
When it comes down to it, if you prefer the Supra over your Z. That is fine by me. I'm glad you enjoy one more than the other. Trying to go state your opinion as a fact is pointless.