USS Massachusetts in-game has a passive skill called "2700 Pounds of Justice".
It modifies her main gun shots into special SHS (Super Heavy Armor Piercing) shells that deal higher damage the further they fly.
In Azur Lane, the backline ships (carriers and battleships) fire automatically normally while you the player control 3 smaller ships (destroyers and cruisers).
However, you do have some control of the backline: you can manually call in air raids or manually aim precise battleship main cannon shots.
Massachusetts's passive skill basically makes her main cannon shots into absurdly powerful sniper bullets that "oneshot" most enemies (or, at the very least, do some SERIOUS damage).
The joke here is that Massachusetts is "one-shotting" (hole-in-one-ing) all of the holes with absurdly long drives.
@Kaiser92
In addition to what @PhoenixStriker5251 said, the skill's based off Massachusetts pulling off one of the farthest recorded hits by a warship in history (may or may not have beaten HMS Warspite's, depending on who you ask).
@strider_01 Could be wrong but I think the main difference between these two cases and why people may treat them separately is Massachusetts was firing at a stationary target while Warspites was a moving target, which is why when it comes to the range debate Warspite is thrown in against Scharnhorst who also hit a moving target.
Well however you wanna look at it they all hit in the excess of 20k yards so I wouldnt worry about it to much :) Be interesting to see if Warspite starts to snipe to turn the game around or Lizzie has her moment to shine and of course youve also got Carolina an Washington as well.