2JZ is a square motor like the SR20DET, it makes good torque and revs freely. It is also capable of 800Hp on stock internals
The RB26 is a good engine also but to get similiar power to the 2JZ, you need rebuilt internals which makes it a more expensive motor to modify. However, if you were to compare the OS Giken RB30DETT(a long stroke RB26 with head to block spacer) with the 2JZ, they would be almost identical engines.
Too hard to compare them being apples and oranges but I love the Nissan motor a little more. Toyota Supra engine bays are a pain to work on...
The 1JZ-GTE is a much better motor than an RB25DET, that is for sure
