Wrong.

DGW is applied network-wide on every peer because each and every peer has to verify the blocks and that's only possible with the exact same difficulty factor.

DGW gets it's input from the blocks solved in the past N time and also (mostly) from the network-hashrate reported by the peers.

A very quick increase in network-hashrate will always result in a drastic adjustment of the difficulty.
Whereas when it goes down again, it will also be re-adjusted down.

Please stop making such claims, this is just how crypto-currencies work.

If you only do a fraction of the network, you only have a fraction of chance to really find the block.

- f0o