Maybe it is working better for you. It's very hard to compare doses between the patch and pills. The jumps in different patch sizes are so much bigger. So maybe you are slightly more.

I had some side effects with both although I didn't really notice it with Oxy, it was making me act out of it apparently and I did have some joint stiffness, that I did connect with the Oxy until I got off it. On the patch I felt really wired.

That's just my experience and ended up doing better on morphine. I think it's a crapshoot for everyone and you're lucky if you find what works for you and maybe this is the right drug for you.