Yes it's a good indepth article that Lazzard, with very few grauniadisms. It seems then that almost every sitcom that has more than one series here gets an attempted reworking in the States, but few make it past the pilot stage - Unlike here, where it airs and often flops, not getting a 2nd series.
Over there, there is so much more production money at stake if it flops because they contract for a ridiculously long number of 'season' eps, and their production teams are unnecessarily large. So if they are unsure after a weak pilot, they don't sign the contract. It means they properly assess pilots for potential success unlike here, where almost everything seems to go through, weak pilot or not.