It may be called the GeForce RTX 2060, but it may as well be the GeForce GTX 1070 in the laptop world. We compare the desktop RTX 2060, RTX 2070, and RTX 2080 to their laptop counterparts to find surprisingly wide performance differences between them.
https://www.notebookcheck.net/An-MSI-RTX-2060-laptop-is-20-to-25-percent-slower-than-an-MSI-RTX-2060-desktop-graphics-card.415539.0.html
What is very difficult to ignore is the fact that this article is written as if the same performance Delta hasn't existed between every generation before this. It's impossible to ignore that it doesn't mention that the gap is actually smaller than ever. Sad, sad article.
Pascal had a delta of 10% on average for non Max Q variants.