A question about swap spread.

Generally,

swap_spread = swap_rate(fix-leg) - treasury_rate(with same maturity)

However, in the note there is an example “Computing swap spread” that is quite different.

A hypothetical 10-year bond of Giant Foods is priced to yield 73 basis points above the 10-year Treasury, a nominal spread of 73 basis points. Fixed rates on 10-year swaps are 41 basis points above the Treasury rate. The Treasury rate is 3.00%.

The result is: The Giant bond’s swap spread is 32 bp. Note that this is simply the difference in the two spreads (73 - 41 bp). It is treating fixed rate in the swap market as the base line to compute the bond’s spread.

Well, I think the swap_spread should be 41 bp. Can someone explain it?