gaps are talked about as if there were magic talismans no economic theory supports the magic power of gaps only as long as the faithful believe the voodoo
Perhaps a little internet sleuthing would enlighten you that about 20% of common gaps NEVER fill. Conclusion: while it is possible it will occur in AVXL as you postulate, it is not set in stone. It cannot be proven statistically that it will always occur.
Since historically AVXL always rises, don't leave out that side of the equation. Also, Anavex is a non-human entity and thus cannot lie. Humans prevaricate not entities.