You're absolutely right about that on ALL points, but (& this isn't directed at you. Just using your post as a springboard), I think most people missed the point of that exchange. It wasn't a pissing contest to see who had it worse, instead, it was showing her frustration with Bruce ASSUMING that since that was how HIS life had gone, it was a foregone conclusion that SHE was going to go through the exact same things.
Both characters had struggles in life unique to them, but just like in real life, you don't discount someone else's issues because you think that YOURS are 'worse'.
I was basically Bruce as my kids were growing up, in that, instead of simply preparing them for life, as I should have, I spent too much time teaching them about MY life. Almost with the assumption that they're going to go through the EXACT same things. Luckily for them, I realized it early enough, but not before they individually called me out on it.
At the end of the day, I'm an old & cranky man that's had a life-altering disease since I was 17. I've suffered through multiple unrelated surgeries that ended with an amputation. I have deteriorating vision that started in my 20's & ended up leaving me permanently disabled & unable to drive.
NONE of these things have made me bitter, BUT, even though those are the facts of my life, when my daughter came home crying because her "Life was over" because she was teased publicly by girls in high school, I didn't go down a list of how much harder of a life I was living & make a checklist of how many ways MY life was a struggle, JUST to minimize what she was going through.
Bottom line, if we care about people, we want to help them through a struggle, but most of the time instead of just shutting up & listening, we relive OUR OWN life & superimpose OUR issues & struggles on those who need help because we like to hear ourselves talk about ourselves. As a youth minister & counselor, almost everytime I've talked with someone, I sit there & listen to them talk & hear them come up with the solution to their individual issues with almost no input from me, then they thank me for my help. I have to remind them that, most of the time, we know the right solution but still want to talk it out with someone who's non-judgemental until we hit truth ourselves.