I can’t remember the para # but it depends on the certification basis for the type. CAR 3 preceded FAR 23 and it simply specified that exceptional skill was not required. Early versions of FAR 23 were the same. Later versions stated “The landing may not require more than average piloting skill". I assume those requirements applied to crosswind operations too but I don’t recall.
I haven’t bothered to check for the C152 but I wonder if that explains the lower xwind figure than the C150.