I don't know, a 285 (according to some sources) junior who benches 425 is pretty impressive to me.
I think the truth is that the he just hasn't been scouted yet. Of course, now that June gave him a "ship" I bet he'll have the ubiquitous 3-star rating by next week.
New and improved Rivals ranking system:5-star: Kid is really, really good. So good, you've already heard of him, so you really don't need us to tell you how good he is.
4-star: Kid is good enough that we've scouted him prior to his senior year. Not offered by UT or LSU (otherwise, we'd bump him to 5-star automatically), and not offered by SMU (otherwise we'd have to downgrade him to 3-star).
3-star: Projects as mid-major D1 recruit and/or recruit's dad has bought us lunch and shown us the YouTube video.
2-star: Kid sounds pretty good on paper, but we haven't checked out any of his games.
1-star: No longer used in general. Reserved for UNT commits.