they are physically the same size.

the projectors are actually a tad smaller, they have a bezel around them which makes them look the same or larger, and they are slightly placed more towards the "outside" of the car, but that is due to them being aimed for RHD cars.

that 1st picture up there is skewed, someone horizontally shrunk that picture and the aspect is off.

those knockoff lenses look really cool in the smoked versions. they only cost about 1/2 what stock ones do (but those aftermarket ones aren't glass either, so don't expect them to be not scratched and/or not yellowed/fogged up in a few years).