I guess it depends on where you draw the line. It's has a lot of charts, stats, upgrades... but actually playing it seems to end in rolling the same few tests with little way to vary them
There is no difference between Adam Smasher leaping from the rooftop with a katana and a child smacking you in the shins with a rusty metal pipe for example, they even pay the same for their weapon.
It's certainly not lightweight in the same sense as something like In Nominie but it's also nothing like oldschool cyberpunk.