The F16s are a lot lighter, that's all I know for sure. I've sailed against Bob Curry on his 17 and of course he won by a mile!
The 17 is fuller in the bows than the Blade. IMO it should be able to handle heavy air a little better. This comparison is probably not true of the Viper or Matt McDoalds's new boat.
In the end, performance is similar, results depend on the driver.