Andersen was a result of the trade too.
Leafs traded the 30th pick they acquired from Pittsburgh in the Kessel trade to Anaheim for Andersen.
It was a win-win trade for both teams. You're just arguing semantics at this point when it's a clear win-win for both teams.
Penguins fans are happy because Kessel helped them to win 2 Stanley Cups. Leafs fans are happy because a result of not having Kessel was finishing last in the league, they received Kapanen and were able to flip the pick from Pittsburgh for Frederik Andersen.
I don't know how you argue against that.
Andersen was a separate trade. I've never understood the mentality of including what the assets of a trade included in another trade bring back as relevant