He really shouldn't have faced those guys in a live hitting situation. I'm sure there are a couple of former college pitchers hanging around USC, either on the staff, or still in school that would have been a better fit for him to hit against. You wouldn't expect a high school prospect, or even a college guy, to come out and showcase against major league talent.
On a another note, Tebow keeps getting bigger and more muscular. He's more of a monster now than ever before. Based on his 60 time and the basic eyeball test, he looks more and more like a true NFL fullback/tight end/H-back combo type player.