Read here. This is to equalize the two disparate car designs; an effort that is akin to tilting at windmills. I can't imagine a world where the DPs are allowed to be slower than the LMP2s.
Also, Daytona Prototurtles have been through the wind tunnel?!
PS: I'm pleased I'll be at Petit Le Mans this year — so that I can see these cars run at Road Atlanta one last time before the bastardization begins.