Certainly not, unless the consumer lens is covered in mud or made from tinted glass!

As for relative aperture adjusted for actual, measured light transmission, that's a T-stop, but these are typically only marked and specified for cine lenses, e.g.,

https://www.zeiss.com/consumer-products/int/cinematography/m...

(IIRC, the Master Primes are geometrically f/1.2 at T1.3)