this concept is well addressed in the fine book, "fly the Wing" by WEBB.
There are many things making for a grease job...indeed you can even do a grease off on takeoff.
the MD82 driver is right...side loading, drift , crab etc are all a big part of a smooth landing.
One must consider the plane involved...but also consider the runway.
Are you sloping downhill? or uphill? are there any visual illusions?
is the ''crown'' of the runway fooling your flare height?