Re: "Zombies are more powerful than Plants" summed up in one word: Gravestones
What really complicates me is the use of deadly + gravestones or anti-hero + gravestones (as you mentioned above). Zombies that have deadly trait should not have gravestones trait, especially assuming that there are devastating zombies like Stealthy Imp, that, if not faced, do devastating damage to plant hero and also have gravestones trait. The subject of the deadly trait is another important point: it is infinite damage on plants (except that the plant has armor and thus neutralize the damage, which is an almost unlikely case). Smelly Zombie is like having a zombi with attack ∞+ for only three brains.
I would like to know what plant things zombie players think are too OP (besides Re-Peat Moss and Sergeant Strongberry's infinity attack loop).