Are monsters with Sunlight Sensitivity supposed to have disadvantage when attacking or perceiving a target that is in direct sunlight?

Certain subterranean-dwelling monsters, such as drow and duergar, have the Sunlight Sensitivity trait, which is consistently worded as follows:

While in sunlight, the [monster] has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Of course, drow and duergar are also playable races for PCs. These playable races have an identically-named Sunlight Sensitivity trait, but its wording is different:

You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

This is a significant difference. A drow PC attacking a target that stands in sunlight has disadvantage where a drow monster would not. One can imagine a drow PC traveling with a group of his monster drow kinsfolk and ending up the butt of jokes (or worse): "Poor Drew, for some reason he just can’t hit the broad side of a barn when we’re up on the surface. The rest of us, we just find some shade to snipe from and we’re set. Even that doesn’t seem to help Drew. I don’t know what his problem is."

Am I missing something? Has this difference been either explained or errata’d somewhere?