Ok this is my review, for what I see Oathbreaker is a new format and it's similar to commander but instead of 100 card deck you use 60 card deck in which you can't repeat any cards like commander with the commodity of having a signature spell at your disposal in the command zone with your Oathbreaker.
In this particular deck the idea is
simple and straight forward that will win or lose at turn 6 but like every thing it has a weak link in this case no means of any defense or counter react to, so an agro deck with a low mana average will win against you, midrange has a good winning chance depending on mana average and "theme" and any deck that is heavy in it's mana average and need more than 6 turn to win will have low winning chances. Attack any turn without any remorse since there is no creatures there to block them plus instants and sorceries turn 6 will be to long to wait for your win condition, 20 life points probably won't last that long.
But your point is clear I understand what you mean.