LHR gets it's share of bumpy approaches when the wind comes off the roof of the hangards between the runways.
As Lowrider says, this is common stuff and what looks scary from the outside is probably just routine for the pilots.
JFK is nothing compared to Paro (Bhutan), Innsbruck or Funchal.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo