I'm confused

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Egnavoxe

I was playing some 15|10 because I want to get better at analyzing before I move, and I played bishop takes pawn on c2 before my opponent disconnected, intending for them to take, then bishop trade on b2. For some reason, the game review engine is telling me that bishop xc2 is a brilliant move. I've been sitting here for a few minutes now and I don't understand how it's brilliant. Can someone please explain to me how this move is higher than a good?

LieutenantFrankColumbo