Some players perform as well in the playoffs as in the regular season. Unless you're a Marleau, a Thornton, or a Sedin, and on and on. The playoffs get harder, not the same.
The worst teams are not in the playoffs, the better teams are in.
Not much padding of the stats against weaklings for the most part.
Therefore even producing the same in the playoffs is harder, not the same, in general.
But the point is we don't know about your second line, even if we give you the benefit of the doubt. The evidence that we DO have about your players in the playoffs is that they did not produce offense.
Your biggest contributor to all the finishes you are so proudly trotting out is the guy who scored 1 goal and 8 points in 21 games in the playoffs. ie. Ronty was virtually a complete non-factor. Now who has the playmaking problem?