Am I wrong for feeling this way?

If you're going to talk to your dad, you definitely should not bring up your sister in any way, especially not to compare your actions and contributions. Based on the way you describe your parents and how they treat your sister, if you do, he'll think you're just being whiny and that'll contribute a lot to your "verbal destruction". It's a sure way to failure.

I'm not one to rock the boat, but if there's no long term negative repercussions for just asking, then I don't see why you shouldn't.

Best of luck to you.