None of these stats (including the person you're replying to) are directly comparable.
- Median net worth is $193k, of which $185k is in their home. Suppose a $10k emergency crops up. Well...you're fucked. If you're lucky you can take out a loan against the accrued value relatively quickly, but otherwise you're taking a 10% haircut having to sell quickly, another 10% in transaction fees, and another $10k in the sudden move/storage/renting/loss-of-work/etc situation you found yourself in liquidating your home to cover an extortionist colonoscopy+lawyer pricing or something. You're _fine_, but when minor road bumps can cause $45k setbacks ($55k if we count the $10k expense this depended on) you're not not living paycheck to paycheck.
- You can't compare the median savings to the median net worth. They're not the same person, and the cross-terms can take almost any distribution.
- The 54% stat is based on self-reported vibes and is pretty blatantly wrong. The median household also has $5200 in unavoidable (without delinquency, losing your home, etc) expenses, which doesn't jive very well with $8k in savings somehow lasting 3 months (assuming the cross terms I complained about aren't too terribly distributed). You would expect 2+ paychecks of stability (which, incidentally, is also the usual prompt for "paycheck-to-paycheck" stability -- not whether it takes one paycheck to be screwed but two), but then you're hosed.
And so on.
You're _right_; the median US household won't go broke missing a paycheck; but 2-3 paychecks is enough to cause major problems at the 50th percentile, give or take friends and family stepping in to soften the blow.