Again, if you're not guarding your body, a good striker will attack it in ways that cause you to guard it predictably (more predictably than if you start out intending to guard it).I don't understand your logic here.
If you try to punch me, your arms will be away from your head and your head will be exposed. If I don't have intention to punch you, and also I don't have intention to drop my arms to deal with your body shot, I can hide my head well behind my rhino guard.
My rhino guard has only 2 purpose:
1. Protect my head.
2. Obtain a clinch.
You are trying to do many things on me. I only try to do 1 thing on you. Who will have better chance?
And, no, if I'm on the other side of that, I'm only trying to do two things: punch your head, and protect from the clinch. I'm just going to use more than just your head to get that head punch, since you're protecting it so closely.