c> hyperfine.exe -i "vpython3 C:\src\depot_tools\autoninja.py -help" "python3 C:\src\depot_tools\autoninja.py -help"
Benchmark 1: vpython3 C:\src\depot_tools\autoninja.py -help
  Time (mean ± σ):     912.7 ms ±  64.1 ms    [User: 1.6 ms, System: 19.1 ms]
  Range (min … max):   836.5 ms … 1050.6 ms    10 runs

  Warning: Ignoring non-zero exit code.

Benchmark 2: python3 C:\src\depot_tools\autoninja.py -help
  Time (mean ± σ):     611.8 ms ±  27.9 ms    [User: 0.0 ms, System: 2.8 ms]
  Range (min … max):   574.2 ms … 646.5 ms    10 runs

  Warning: Ignoring non-zero exit code.

Summary
  'python3 C:\src\depot_tools\autoninja.py -help' ran
    1.49 ± 0.12 times faster than 'vpython3 C:\src\depot_tools\autoninja.py -help'