I'd be shocked and very disappointed if they keep Daniel over Gunter. Daniel has the measurables but he was semi-abused by the KC back-ups. Late into the 2nd quarter Daniel was about the only guy giving up yards. He must have been attacked successfully 5 times in the first half. He bounced back a bit but he can't cover or make a play on the ball like Gunter can.
Gunter can use his length, physicality and good technique cutting off deep routes while turning to look for the ball, using the sideline, etc. to overcome his lack of top-end speed. Al Harris made a pretty damn good career on the outside without much speed.
Bottom line IMO is Gunter's flags can be overcome. Other than running with guys, I don't see a great athlete or playmaking ability in Daniel. He just allows too much separation and gives up too many plays IMO.