Osram bulb specs

[Qship1996]

Here are the specs of 2 different Osram H4 bulbs taken from Osrams website



#64206 85W/80W 2400 lumens/ 1750 lumens

#62203 100W/80w 2600 lumens/1500 lumens



How can the #64206 produce 1750 lumens on low beam from 80W while the same 80W low beam in the #62203 only produces 1500 lumens? Mistake in printing?