Don't make any decisions based on my comments, because I don't really know that much about either frame. However, that Giubilato does appear top notch, better than the other Giubilato frames posted on BF previously. It also appears fully chromed, with chromovelato paint finish, which looks great, but may be prone to paint flaking? You'd have to ask a painter about that.
Do some research on your Cromor tubing vs. SLX. It's possible Cromor is better for larger frames, as I've heard SLX can be somewhat whippy, especially for heavier riders. But you need to confirm that with another source!
From a value perspective, I think the Pinarello has the name going for it, and the Giubilato has the tubing going for it, so I don't think you'd be losing value on the trade.