Why Pacquiao is a threat to Floyd

I find it funny when i listen to floyd fans and claiming they know boxing. Its like a kid who mentions quantuam physics but has no idea what he is talking about. Since no one else in the room does too they get a way with it.....Floyd is a better boxer. Floyd dominated marquez,,,you get my point.. Why pacquiao is a threat to mayweather. what are key points in this fight. In this particular order. 1a: Pacquiao's movement. in and out ..in and out 1b: Pacquiao is a southpaw 2: stamina ability to take a punch and keep going foward/ workrate 3: Speed 4:Power power is the last. And i put that in last cuz pacquiao should already have a mind set to go to the full distance for this fight.Pacquiao has all the tools to beat floyd with out relyin on power. Well not quite, he will need power but not to land a flush shot but to make floyd cautious and respect his power.That also plays a role. If you recall floyd last few fights who gave him the most problem? believe it or not it was ricky hatton. Why? Go rewatch that fight. Trust me its good learning experience. Ricky was a terrible boxer but he had that one thing. His speed with his feet. Floyd's greatest asset is his ability to gauge his distance from his opponent and his timing. Without that he is even reluctant to throw a jab. Southpaw stance is a factor but not as much as movement. Floyd can adjust and he is even better when he is ahead. South paw stance plays that role in this fight. To take the lead early like what happened with zab. I would put southpaw stance #1 if pacquiao had a great jab. But thats not the case. When pacquiao comes in floyd has no problem with holding you. But southpaw stance does take away one of floyd's favorite defense the shoulder roll. That wont work with southpaw stance. So i fully expect that floyd will be on his A game with his distance and timing. Expect alot of footmovement from floyd.Trust me he is worried about that. And then he will utilize his holding. Pacquiao's stamina is unlike any other. only other person that can even compare is ironically its Floyd mayweather. Difference is pacquiao has a higher workrate and gets hit during the fight that drains your stamin but he still stays strong for 12 rds. I have never seen anything like that. He is either freak of nature or maybe he is on peds. Since i dont know im just gonna say pacquiao is very special. His stamina something to behold. Floyd knows this too. Floyd knows this all too well. If you recall back there was a guy who beat him. But on paper this guy had no chance in hell to beat floyd. Not even in the same stratosphere interms of boxing ability. (but boxing is more than boxing skills).His name was castillo. He beat floyd with just pure stamina and workrate. Speed. We all know about pacquiao's speed but against mayweather its definelty not the most important. Dont get me wrong you need speed to even compete with him (look at marquez vs floyd fight) but not the deciding factor. Same goes with his power. We all know his power but to hit floyd with it is very unlikely but his power will count when pacquiao goes after his body to open things up. Pacquiao a is unique threat to mayweather whether you like it or not. This fight shouldve happened 3yrs ago. Why hasnt it? you know why...its not because of drug testing.