The largest mid-term slaughter in 72 years

It's great to be on the Democrats' email list. You get these pearls of wisdom from Joe Biden.
But this Congress passed the largest set of tax cuts for the middle class since President Reagan, the largest education reform since President Johnson, the largest infrastructure investment since President Eisenhower, and the largest clean-energy bill ever.
And Democrats suffered the largest loss of seats since 1938. So Biden forgot to mention the largest load of crap - which voters rejected in November.
If the successes were so large, how come the defeat was so large?