the g35 was just the rebranded nissan skyline (aka the V35 in japan). nissan been had the game on lock before that since the r32. americans were just too sheltered and it took a fast and furious movie to shed light.
i know you're talking about the non GT-R versions (entry level joints) but to say they haven't released anything game changing is inaccurate.
they haven't released a game changing car since the r35; so about 10 years ago. give them some time. When they do clap back they will make another huge impact. engineering a game changing vehicle takes a lot of time and money.
the new q60s coupe is nice though and IMO looks better than the previous gen coupe. i seen a couple around here.
Lexus IMO is on front street now for this generation with the RC-F and the LC500.