Complex sentence: Both needed help, but stop motion Gatti's style (hughe models) was not his cup of tea, so he tried key frame animation for Raggedy Ann & Andy, but quit this also because it was not his style.
Split into simpler sentences: Both needed help, but Gattis' stop motion style using huge models, was not his cup of tea. He tried key frame animation for "Raggedy Ann & Andy", but also quit this because it was not his style.