There will always be someone who has it “worse” but how does that help you deal with your own past? It’s simply not relevant to compare ourselves to others. We each have our own unique experiences that we have to learn how to understand, overcome, and heal from, all from within our understanding of who we are.
We can learn from others. We can learn what this did to overcome. But comparison is pure ego that only invalidates your experience, as you said. It doesn’t matter who has it worse. What matters is YOU coming out healthy and happy on the other side, and in this case, sharing that journey so others don’t feel alone.