How come all professional oddsmakers list Floyd as a fav. against Pacquiao?

How are odds made ?
Odds for Las Vegas sportsbooks are made by sports “experts” who use their knowledge, experience, inside information and a host of other factors - mainly statistical – to determine the likely outcome of any particular sports contest. Much of this process is educated guesswork. But the goal of oddsmaking for the casino oddsmakers is not to predict the outcome of a game, it is to furnish the bettors with a betting line that will split the public in two with half of the people betting one side and half on the other. This is where “juice” or vigorish comes into play. The “juice” is the 10% that bettors have to pay if they bet football or basketball at 11 to win 10.
How do odds change?

Sportsbooks move lines to reflect betting trends to balance the betting so that the book won’t lose gobs of money on a particular game or event. If a lot of money is bet on John Smith to win the French Open at 3-1, the sportsbook will move the odds on Smith down to 2-1. Here is another example: if the Raiders are getting a lot of money at -4 ½ the boys in the book will move Oakland up to -5 to try to tempt people to bet the other side. The sportsbook must be careful when they move the lines so as to avoid a “middle”. A middle occurs when the line moves so much one way that sharp bettors who played one way at one end of the line move bet the other way at the other end. This creates a 1 or 2 point spread between the extremes where both bets cover and the sportsbook gets nailed.
An example might be helpful. Lets say that Oakland starts off at -4 ½ and ends up at -6. Players who took Oakland at -4 ½ could play the other side at +6 and hope the Raiders win by five. If this happens the casino got middled. If it doesn’t happen the bettors who took both sides lose only the juice on one of their bets. So the clever player gets a large payoff if the Raiders win by five or a small loss if they don’t. This is smart betting.
Why are Odds Made?
Odds are made to facilitate betting. If there are no odds or betting lines casinos have no way to take bets, and casinos make their money by accepting bets.

 

You don't know **** about sports betting.

 

Because they know stylistically PBF has the advantage and they know above all else, offense sells tickets but defense wins championships.:deal

 

Since Mayweather fought JMM and Manny fought Hatton I have been watching the odds , and the favourite has yet to be established , after each fight the numbers change , sometimes Pacquiao , sometimes Floyd. Also odds change dependant on how much is put on a fighter.

I dont think there is enough between them to have any decisive edge in the numbers , only the ring will tell the truth.