Copy Paste - Drag Drop | Behind the scenes?

Hello dear Community,

i’m trying to figure out what happens behind the scenes with Copy&Paste or Drag&Drop (copy not cut).
Background is that in another forum someone makes the claim that Drag&Drop (copy) from Explorer to a cell phone leads to faster transfer in Windows.
He made a few screenshots as proof.

After that I got curious and did a test with EOS as well.

There I could see a slight advantage of Copy&Paste.

Is that still within the measurement inaccuracies? Test with more Files incoming.

Are differences due to different behavior of the two operations to be expected?

Thanks a lot!

Link to the guy who did the test in Windows. (German but screenshots with english description)


Edit:
Seems like theres no difference with dolphin in EOS:


Does anyone happen to have an explanation for the behavior under Windows?