I agree with all that. Thats why I said he struggles, not that he's bad. I don't think he is a bad defender, but his lack of size causes problems sometimes.
I've played and coached at different levels, and I can tell you that it's pretty common for guys who have atrocious defensive fundamentals get praised as good defenders simply because they are freakish athletes.
Some of these sound like they should be on Urban Dictionary...and I don't even want to imagine what they'd mean there.