My friend i played SC II this morning.
I won 3 matches in this way : Probe in enemy base , pilon , GWx2 , pilon - > 3x zelot ( while i kept produceing probes )
3x zelot vs 4 zergling/2 marine / 1 zelot and i wont
I lost 2 matches in the folowing way : 3 x reaper a cliff harast , zelot is slower than reaper GG
Sc II dose not requier skill until you reach end game.. aka player like WhiteRA , thelittleone ,LiquidNazgul ( those are the one i liked til now ).
And campagin is all about stacking 1 or 2
p units and its easy win i 1 shooted everything on hard , brutal would have been no diference..