I have seen nothing from Ponder in either college or the pros to suggest he will be at anywhere near the level of Manning, Brees, or Ryan.
Griffin, on the other hand, had the best rookie season I have seen since I have seen rookie seasons. His YPA of 8.14 was the best in the league, his 20-5 TD-INT ratio was fantastic, and that was just throwing the ball. Wilson looked very good as well.
Will Jennings help Ponder? Maybe, but Harvin is one of the best slot receivers in the NFL, and he did not do much to make Ponder even a second quartile quarterback. Harvin did allow Ponder to keep his job by getting insane YAC from throws behind the LOS with a cover guy right on him. Even then, Ponder had the second worst YPA of any starter in the NFL.