Game can't be balanced for everything , 1v1 is going to have to take a fall for 3v3 and PvE which will never be 100% balanced anyway
On top of rogue being strong, you are a dk. Very weak against direct physical damage you won't last long against any melee blowing cds unless you are blood..
There really isn't much to discuss here at this point, especially 10 days since the OP was even here in the thread.