@BlazetheDelphox: Yes, definitely, as I said in my answer. It is just annoyingly repetitive.
@gau222: According to my experiences, you are incorrect as well. The EVs I earned made no difference. However, I was testing it with weak first-form Pokemon like Flectchling, so possibly it's determined by base stats, not the actual stat or EVs.
Also, Semp is correct, the level 50 thing you mentioned is wrong. Besides, the asker said nothing about competitive, so I don't see how that was relevant anyway.
I answer everything based on experience or a reliable source such as Smogon or Bulbapedia (whose reliability is up for debate, but whatever).