I disagree 100%. I think Davis is smarter and more confident. I think that he has the bigger upside because of his great instincts and propensity to make interceptions. Will Davis has the potential to be a star and lots of you can't or don't want to see it. Day after day at Practice, he excels. He is probably among the very best players at the Training Camp. Go back and look at the comments from the tweeters watching every day. Will makes plays. He just needs an opportunity to show it on the field in games. He has earned it.
The competition has helped to improve both Jamar and Will. Make no mistake, Jamar could also be decent. Just because he was drafted higher doesn't necessarily make him better. Natural competitors respond to being drafted as the underdog.
The old Parcells strategy of drafting 2 players at the same position and seeing which one develops the best sometimes seems to favor the lower drafted guy. The higher drafted guy sometimes misses out - eg Philip Merling (2) vs Kendall Langford (3), Patrick Turner (3) vs Brian Hartline (4), BJ Cunningham (6) vs Rishard Matthews (7). Bigger expectations were on the higher drafted player, but the underdog won everytime. Note - in these 3 examples, all of the lower drafted players are still in the NFL but none of the higher drafted players are.