GSP has improved as a fighter since his bout with Hughes. I doubt he wants to give Hughes a preview of his new skills and strengths.
What was silly was when GSP left the (Staph-infected) gym, he told the other trainers he was taking off, and Hughes was all like "we don't need him here anyways".
Then Hughes says he was avoiding him.
You said he didn't need to be there in the first place!
Also, if GSP is so afraid of Hughes, why has he been begging for a rematch for months and months?