With their weekend opponents in the relegation zone following a midweek mauling by Leeds, Brighton will start as favourites to take three points at the American Express Community Stadium.
Poyet however told his club's official website at http://www.seagulls.co.uk that on their day Forest can beat anyone in the Championship.
"They have got players in their squad who could be higher in the league.
"Football is so unpredictable and for some reason it has been more difficult for them to get out of their situation."