I tried both, pulled Flacco from the TVP so decided to try him out... He's basically a righty Brunelll with less speed.
I figured Brady's card would be better clearly but In don't think so now.
Brady need 5 AP to get HRM, fearless, sfl and be gets gunslinger for free. He needs GS to asked to that release.
Flacco gets HRM, fearless, and PLE which is better than SFL if you're throwing in the move at all even rolling out. He doesn' get GS discounted but he has Slinger1 release.
In ganeplay I honestly think Brady's zero chill card had maybe a better release than 99 Brady. I think on deep balls Brady's ball floats more than Flacco's does. The one thing I didn't love about Flacco other than his speed is that he has a little bit of a windup on real deep throws. I find myself with a post to Edelman open about 40 yards downfield and Flacco rook a windup. The same throw with Brady, maybe a little less windup but the ball was a rainbow.
That's just my early take on these 2 QBs. Will have to use them more to really evaluate them both