Using the 1981-2010 average of number of days where snow falls in a month, March sees 4.2 snow days whilst there are just 3.9 days on average in December.
The majority of Easter Days occur in April, when the chance of snowfall drops to just 2.3 days.
Taking that into account we can say that white Christmases and white Easters are about as frequent as each other when Easter is in March.
When snow does fall, it may be more inclined to settled during a March Easter compared to Christmas, as soil temperatures (away from the surface layer) are lower compared to December.
spring is a season of big weather contrasts and temperature swings. Days lengthen and the Sun gets stronger, but when cold air moves in from the north, we can be quickly plunged back into wintry weather.
So even when Easter falls in April, spring snow can still happen, especially over the higher ground of Scotland.