Remember, Pacquaio also lost to a fighter who was much taller than him.I can't remember the fighter's name. Nonetheless, Pacquaio has a history of being frustrated when he is kept at bay through jabs. That was how he was defeated by Morales during their first fight.

If Solis will take advantage of his reach and height he has a 60% chance of defeating Pacquaio. Solis should watch the fights of Pacquaio with Morales and this forgotten Asian fighter (i think it was korean or a thai).

Another thing, Pacquaio is so concerned with his political career right now and he is a fighter that gets easily distracted (remember, the tax problems, gloves issue, medyas, etc.?) That is another 5% to be added to the 60%. All in all Solis has a 65% chance of beating Pacquaio.