My question is what amount of defense do Dreamlands, Lichking, ubers/omega, and stuff like that have?

Also while I'm here what resist % do they have to each element?

Do these things scale with game difficulty from more players?

I would just google it but I feel since overall difficulty is higher here that the amount of defense will be more on enemies, and my main concern is the custom content.

I'm looking for specifics to make sure my characters always have 95% chance to hit on every enemy, to calculate my magic penetration, then put the rest into my health.

The answers would be here if the post was "complete".....
http://annihilus.net/wiki_index.php?...-bossstats-etc