I guess it's the electronic engine monitoring and all that jazz on the modern cars that give it more power. I don't care because driving the stingray feels absolutely amazing and in my experience handles perfectly fine. The feedback you get from classic cars is amazing and it's nice to feel like you're driving without anything really helping you out. Obviously modern cars are better during the winter.
You might not care, but your C3 is embarrassed to be seen riding around with only 150 HP
Your right the electronics flips the switch on an engine to output much closer to the design specs
Consider your 5.7 liter engine HP and maybe lucky to get 10 MPG and then
my C5 LS1 modified engine outputs 500 HP and can get 30 MPG (if I am a good boy
But also the electronics, ie, the software calibrations can also steal performance by controlling the amount of torque
when auto tranny shifts, etc
I suggest you pump that output out by doing what the Brits and Americans did in WW-II with warplanes by adding a water/Methanol injection
in intake and upping the timing will give your engine a boner !
I started doing just that with my C3s back in late 1970s