What we learned: Mega-edition from Saturday night

With nine games on Saturday night, this is going to be the biggest “What we learned” recap of the preseason. So let’s get to it. Bills 35, Jaguars 32 1. Jaguars quarterback David Garrard didn’t have a great preseason, but rookie Blaine Gabbert didn’t do anything to put Garrard’s job in jeopardy.  For now. 2.…