Don't worry you're good. This is what it reads:
"In my mind, the original Peggle/pinball had the sword/ball be a destructive oppressor/predator happily destroying whatever he pleases for their amusement, and then now you're shown the other side, that the pins actually care what happens to them. With my assets, time and lack of experience, I had difficulty illustrating that storyline in time though, and had to focus on functionality and basic gameplay."
In other words, instead of being the destroyer of pins, you now have to protect the pins - and it's now (thought to be) revealed to you that the pins that the pin-destroyer originally targets for big points is actually your life and you're trying to protect those from being destroyed.
I'm curious what you have in your mind when you think of "role reversal" and what you expect in a game for it to live up to that.