Well, since Sanders is on a hot streak, and Henerson's stats looked very inflated before he got hurt due to a very small sample size, the majority might go with that side. But I think overall for the long term the Vasquez side wins.
IF Sanders can keep up even 2/3rds of his current production all year, and Henderson can continue his new found 3 point shooting skills that side would win IMO. But I highly doubt that will happen. Vasquez is the most valueable player in this deal, and although Dudley has been up and down, he was like that last year too, but figured it out mid season and provided nice value.