Last season we'd have conspired to lose that game, probably from the one chance of note that Cardiff had in the second half.
It does feel frustrating have three "if only" games in a row now, but unbeaten, top of the table and averaging over 2 points a game. There's not a lot there to be unhappy about.
Obviously being top is fabulous but you can dress it up anyway you like. without 30-35 goals from your strikers, over the course of the season you won't get promoted IMO. The Point gained or 2 dropped argument after every game is neither here nor there.