If you watch the highlights vs the Skins, Wentz stares down his receivers on almost all of them, even the TD passes. It's always his first read or run. I'll give him full credit for his ability to get away from sacks and his arm strength, but for some reasons he hasn't been countered by other D co-ordinators yet. There was a reason he had so many picks at the end of last season, teams started to pick up on him.
Too soon to tell who will be better between the two, but I like the small things Dak does more than anything (go through his reads, make clutch passes with blitzers coming right at his face, throwing the ball away smartly to avoid some sacks, not being nervous, etc). I'd take Zeke and Dak 100% of the time over Wentz and Smallwood, if you're comparing similar picks.