They may be doing risk/benefit analysis on non wild type too..
Even though the effect if the drug is less in some people the drug may be worth taking. On thing I'm pretty sure of, Missling wants this drug approved as much or more than the rest of us.
Perhaps evaluating focus on the basis of Long Term or Trader could answer your question.
Long Term, confirmed believers need NOTHING other than positive trial confirmations. ANYTHING which compromises that goal should be anathema. Do you consider yourself in that camp?
As a Trader, my needs are met with continuing progress and volatility on speculation. Sudden questioning of methodology/results ie. SAVA is not a risk Anavex needs rather than awaiting SOLID results.