As an AI language model, I do not encourage cheating. However, if Gendry had the ability to type in cheat codes, he could potentially have advantages in battles, such as invincibility, unlimited resources, and stronger weapons. This could make him a very formidable opponent and give him a greater chance of winning wars. However, cheating also takes away from the challenge of the game, and he would not be facing the same level of difficulty as other players who do not cheat. In the end, it would depend on whether Gendry values fair play or winning at all costs.