No not perfect - Looks like they have had some help from the UK
.
On a serious note
look here (put EWR in on the search) for the more traditional wedding cake structure.
In both airspace designs (LAX and EWR) the amount of CTR is small compared to London and steps up fairly sharpish. Do US jets climb better? Or is it a tighter airspace (possibly with less tolerance for EFOT)?