Yeah probably, but there are a few caveats to it (as I'm sure there are for the defensive argument in fairness).
Suring up a defense can have a negative impact on your attack... if your natural shape is to sit deep and have your wide men tracking back, it's more difficult to get up the pitch quickly to create goal scoring opportunities - which is why set pieces can be so important.
To be honest with you, I don't think it's our chance creation that's the issue... it's our chance conversion. Again, plenty of room for argument regarding 'DO WE NOT DO FINISHING PRACTISE' and 'he's the one who picks the forwards' etc, but if DCL had converted even 10% of the chances he's had over the last couple months we'd have more points on the board.