Does Manny Pacquiao scare black fighters??

Ever noticed how people said that Manny was ducking black slick fighters. Well whenever he fights one they seem like they would rather be his friend than fight him. 1. Joshua Clottey - Normally very confident, maybe slightly ****y at once upon a time, and when he fought Manny he became so humble, and practically admitted that Manny would win and that he was just along for the ride. 2. Shane Mosley - Legend, been around the blocks a few times, so wasn't star struck, but still ended up acting like he was Manny's best friend, like he was scared to death of Manny. 3. Timothy Bradley - (Come knock down this brick wall Manny) and now he acts as if he's Pacquiao's best friend, even Khan and Pacquiao didn't act like this together. Is it fear?? Are they trying to prove that they are different from other black greats, such as Tyson, Ali, Jones, Hopkins, Mayweather and etc???