Yeah, I think this is quite a bit more balanced. It's still a good card, and I'd use it in some decks for sure. If it needed a small nerf still, you could make it so that defense was the first stat increased, instead of attack, so it went +0/+1, +1/+0 instead of +1/+0, +0/+1. I don't think it really needs that, but it's an option.