They claim it "pays to wait", but that determination depends on other variables obviously, one of which is your life expectancy relative to the SS actuarial standard. The amounts are adjusted to pay the same amount over the mean expected lives of recipients. If you live longer, taking it at 70 may be better.
And then there is the variable of how one might invest the monies, if one can, at 62 for 8 years.
And then there is the possible cut in benefits in 11 years.