Stephen King (author of "The Shining") in his book "On Writing", writes:
American grammar doesn`t have the sturdiness of British grammar (a British advertising man with a proper education can make magazine copy for ribbed condoms sound like the Magna goddam Carta), but it has its own scruffy charm
I'm interested to know what King means by "sturdiness" here. Can anyone give some examples or more insight into what exactly King is talking about?