As uninformed outsiders it's hard to compare. Brisbane and Schache did a pretty solid job of covering his issues and retaining his perceived value. Jake's issues have regrettably gone very public, which has likely helped no one. Hopefully a deal is done and no one is left ruing earlier leaks.Respect your opinion.
Not sure about Schache issues, but hard to imagine them being anywhere near as significant as Stringers (a relationship breakup involving two children, gambling problem and 17yo girls and publicly sacked by your coach not to mention the front page headlines across the country and every major news channel
).
If on-field performance were the litmus test, I'd suggest Schache's issues had a bigger impact in his 2017 than Jake's, but that is my own utterly uninformed speculation.