Neither paracetamol nor ibuprofen work by blocking pain. Depending on the type of pain and your physiology it can range from really effective to not at all.
I only take paracetamol, it works better than both ibuprofen and opioids for me. I know other people who have the exact opposite experience. There’s no absolute here.
I wish they dipyrone was sold here, but alas I can only get it when I travel abroad.
For mild stuff I use ibuprofen, if it gets worse, diclofenac works every time.
Soluble paracetamol literally turned the pain off like a switch - of course I was limited as to how much I could take, which I was careful to stick to but I was almost in tears waiting for the time to come where I could take more paracetamol.
So in some situations paracetamol can be an extremely effective painkiller.
Double blind placebo controlled trials have shown that acetaminophen/paracetamol is superior to a placebo at controlling pain.