In post #29 you're simply winning the f7-pawn (what in the world?).
Would you have a rook, or a bishop and a knight?

No, generally when you swap two minor pieces for a rook you have put yourself in a losing game.. In the diagram you swapped a rook and a pawn for two minor pieces and even with the extra pawn you put yourself in a losing game. Remember a knight is generally worth maybe 3.2 pawns and a bishop is generally worth 3.3 pawns compared to a rook worth about 5.0 pawns.
A simple way of taking a bad opponnets rook in 4 moves, emphasis on bad.