I want the ability to compliment someone's deck

I mostly play Brawl, and occasionally, I come upon a deck that's actually fun to play against or just kind of clever in its theme. Against those kinds of decks, I often either feel bad for winning or wish I could just tell them that I didn't mind losing. Regardless of how the game itself goes, I wish I had the ability to tell someone "hey, I like your deck". Does anyone else feel that way?