Linear title is sometimes different from the best though. Michael Spinks, George Foreman, Shannon Briggs, Joel Casamayor, Carlos Baldomir....all linear champs who not too many people considered the best in their divisions.
Diaz will have a field day with Santa Cruz. I wouldn't call him a "bum", but he's quite mediocre. I wonder about Casamayor....he gets up for big fights and I wonder how much of this was ring rust vs. old legs. The dude's done alot of "hard living" if you get my point. Diaz wouldn't let Casa hold the way he did SC, I think. Peace.