In 2008, Tebow let the Gators to a 12-1, an SEC title, and a National Championship game win over Oklahoma. Tebow finished third in the Heisman vote that season. He completed 64% of his passes, to go along with 30 TDs and a miniscule 4 picks.
In 2009, his senior season, Tebow led his team to an SEC championship game, which the Gatos unfortunately did not prevail in, so he squandered the opportunity for one more National Championship. But he did have a great career, throwing for 88 TDs and only 15 INTs over the four years of school, and completing over 67% of his passes.
He clearly could throw it. In college.