Thoughts on Yoenis Tellez vs J Rock?

J Rock is a 9-1 underdog. Is it just me that finds these odds really quite crazy? I get why he is favoured he is young, undefeated, J Rocks best days are probably a little behind him but those are the sort of odds expect for a total no-hoper that is almost certainly going to get flat out steamrolled. Tellez from the little I'm seeing I can't say I am impressed. That is my point, this guy just is not this superb prospect the odds might indicate and I don't think J Rock is THAT shot. I don't know if I am missing something? I'm not understanding the odds or the logic of him being so massively favoured because to be very blunt he is all kinds of mediocre. I am surprised he is from the Cuban system and don't really see it at all in his style. Poor footwork, slow feet. Very easy too hit like no reflexes at all just straight up with a high guard. Its not like he is particularly fast or explosive or some big power puncher. He doesn't look the biggest of light-middleweights. He just looks b4ng (why is this censored? lol) average to me. I'm not seeing it with this guy or why he should be so heavily favoured. What am I missing?