I might be wrong, but isn't the "encrypt everything & delete key" method -way- more difficult to recover from than an actual disk wipe? I mean, with a disk wip

I might be wrong, but isn't the "encrypt everything & delete key" method -way- more difficult to recover from than an actual disk wipe? I mean, with a disk wipe, you can still try to recover some data using data forensics tools. If they key is done, you can have the best forensics team in the world, you can't decrypt the garbled data.