Does Imputation make the Resurrection superfluous?

On a recent post I made about Calvinists denying the sufficiency of the Cross, a Calvinist named Miguel made the objection that if Active Obedience is considered to be "adding to" the sufficiency of the Cross, then logically the Resurrection should be considered as "adding to" the sufficiency of the Cross as well. In the course of responding to him, I explained how the Resurrection has no place in the Protestant understanding of Justification, while it has an integral part of the Catholic view of Justification. I decided to dedicate a short post to this subject, because it has just hit me as to how serious the ramifications of severing the connection between the Cross and Resurrection are on the issue of Justification. 

Why do Calvinists reject the sufficiency of the Cross?

I am becoming more and more irritated by the double-standards of much of Calvinist theology. One of the more outrageous instances involves the Reformed view of Christ's work on the Cross. I've heard James White make the repeated accusation that Catholics "deny the sufficiency of the Cross," and yet as truth would have it, White and other Reformed have it exactly backwards! In this post I will quote an short article by Calvinist R.C. Sproul advocating for the doctrine of the Imputation of Christ's Active Obedience, which will also show that it is Calvinists who reject the sufficiency of the Cross. Sproul's comments represent the majority of Reformed theologians, so this isn't just his lone opinion. 

Romans 9 Debate (Concluded)

A Reformed Protestant named Miguel has agreed to a debate on Romans chapter 9.
The Debate Thesis:

Is corporate (as opposed to individual) election the true focus of Romans 9?

I will be affirming; he will be denying.

The debate format is as follows (I will link to the Essays below each week):

Week 1: Opening Essay (Due 9/8)

Affirmative / Negative

Week 2: Rebuttal Essay (Due 9/15)

Affirmative / Negative

Week 3: 5 Cross Examination Questions (Due 9/18)

Affirmative / Negative

Week 3: Answers to Questions (Due 9/22)

Affirmative / Negative

Week 4: Closing Essay (Due 9/29)

 Affirmative / Negative

If anyone has ideas on the best way to host the Essays, please tell me. I'm using Google Docs, which is kind of annoying, but better than creating a new Blog Post each essay.