Is 2533 cc car is powerful or 2000 cc?

Normally the larger the engine the more power it will produce. But today with turbo chargers and other tuning options it is possible for a 2000 cc engine to be more powerul than a 2533 cc engine. I have seen 2 liter engines putting out 300 h.p. and 2.5 liter engines putting out only 130 h.p.