The Republic of Ireland international helped the Championship side seal a 3-0 win over Forest.
Newcastle United lost 1-0 to Leicester City on Monday night.
It was claimed that Everton's players were losing faith in Roberto Martinez.
Paul Merson has raved about West Ham star Dimitri Payet.
The midfielder was once again impressive in his side's latest win.
Stark believes the Scottish Championship leaders are a much improved team from the last time these two sides met.
The two sides meet in the second leg of their Europa League clash on Thursday.
Paul Merson has raised some issues with Rafael Benitez's appointment at Newcastle.
The Leeds United player has proved his manager wrong on the training field.
Gary Lineker has raved about Leicester City midfielder N'Golo Kante.