Title says it all really. In a 1v1 game it is impossible to protect your gens from stikbombaz and still remain competitive with capping the field. If you just leave a dev squad or a shuriken platform he will either nade your setup team, or nade a gen, back off real quick, nade another gen, back off real quick, and then all your gens are dead. You cannot afford to leave a small army defending your gens, your just going to get outcapped. These guys need a nerf vs gens.
I suggest a nerf to their damage against gens so it takes two volleys to kill a generator, allowing time to actual get units over to fight them off. Remember, one unit guarding your generators at all times will not deter stikbombaz. They will simply kite your unit whilst throwing grenades when their cooldown is over.