Michael Vick has outplayed Kevin Kolb so far this season. Kolb played a dismal first-half in week one against the Packers, while Vick played well in the second half. Vick then played phenomenally against the Lions in Kolb's absence this past Sunday.
Kevin Kolb has not lived up to the expectations in his short career as an NFL starting quarterback.
It is not fair to judge a player on just one half of football no matter how dismal. Michael Vick has had dismal halves, even guys like Tom Brady and Peyton Manning have had dismal halves.
To change starting quarterbacks based on one half will give players reason to doubt Reid's decision to trade McNabb, his decision to start Kolb, and subsequently other personnel decisions.
Andy Reid named Kolb the starting quarterback at the beginning of the week, and today switched to Michael Vick. This is dangerous because it can lead to unrest and distrust amongst the players.
If players do not trust the coach when he makes clear statements as to who will play it can cause friction between players and the coach.
To change starters after an injury, as has happened in the Kolb's case, can create an atmosphere within the team which is unsafe.
If a player is afraid of losing his starting job he is less likely to report injuries. With people now knowing the dangers of concussions, and injury that frequently goes undetected and unreported, this is not an acceptable change.
Whether or not Michael Vick is the better quarterback is not the issue. The problem is how it has been handled by Andy Reid.
Deciding on one starter than choosing another, as well as changing starters based on one half, and changing a starter after injury can all undoubtedly lead to problems within the Eagles locker which may then show themselves on the field.