Are CDS Spread assimilable to I-Spread?

Hi,

I have a question concerning the I-Spread and CDS Spread? Can we consider that they are equal?

The definition of I-spread are defined page 14:

“The I-spread for a credit-risky bond is the amount by which the yield on the risky bond exceeds the swap rate for the same maturity”.

I-Spread = YTM-Swap(T).

But, the Swap Rate are quoted on the LIBOR for maturitites greater than 1Y.

Now, on page 118, the say: CDSSpread= YTM-LIBOR

And the LIBOR is exactly the swap Rate for long maturities.

So my conclusion is CDS-Spread ~ I-Spread

Thank you.