iMtG Server: Gathering

Here is my question:

Player A: Cast  {Thragtusk}

Player B: in response,  {Skullcrack}

Since skull crack was the last on the stack, it resolves before swag does, so the life gain is negated.

Is this correct?

Yes.  {Skullcrack} resolves before  {Thragtusk}.

Logically and following the pancake rule, I thought my reasoning to be correct but I wanted to make sure before I started playing that way.

Thank you for the quick response