Originally Posted by Scrap Irony
Disagree. You value a prospect not by what he could do, but what he could/will/might do when compared to others at his position.
When comparing Alonso's ceiling, floor, and likely production with with the 1B already in the major leagues, in the high minors who're likely to be in the league with him, or the "value" of said prospects below him, Alonso should be negged a bit for Votto's performance. It affects his "value" to the Reds (as a trade piece and as a major leaguer) and as a 1B overall.
Sure, Joey Votto raises the "needed performance" bar a tad, but if Alonso were a Rockie Joey Votto would still do that. But, from what I can gather, if Alonso were a Rockie, his ranking would have been higher than it was because he is a Red and blocked. IMO, that isn't the correct way to look at things at all. I want to know who will be better between player A and player B if both are given the same chances.