Tha't not valid comparison, valid comparison would be looking 1on1 cyan+1 vs cyan +2 hero with same runes.
Most cyan +2 heroes will win their counterparts.
TBH I've promoted my corgi to +2 and he still dodges everything, so I'm not sure that dodge heroes on +2 as bad as people do picture it. I need some more test to cosider promoting my archer thief and bard thought.
Cyan+2 is obviously won't give you some real power upgrade, it's just plateu promotion in comparison to cyan +1.
I still believe it's cyan+1 fault, those double dodge items was bad desicion, as well as cognitive mask.