Shelby 427 Practice One Speeds

Here is the top 5 for the fastest speeds in the first practice for the Shelby 427:

1.Mark Martin
2.David Reutimann
3.David Stremme
4.Jimmie Johnson
5.Kevin Harvick

What could this mean. What I mean is look at the top 3. I know it's only practice, but some of you thought I was crazy thinking MWR is going to do good this year. David Reutimann is 2nd in speed and Mark Martin is not in MWR but is first in speed. Could this be the year of the underdogs?