Yes, AVXL gave some actual numbers for improvement (or at least, slowing of decline) from their clinical trial:

Quote:

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over 12 month the ANAVEX 2-73 data shows a calculated treatment benefit of 1.8 points on the MMSE scale (p<0.016) and a calculated treatment benefit of 4 points on the ADCS-ADL score (p<0.019). Furthermore, the correlation was positive with all measured scores (MMSE, ADCS-ADL, Cogstate, HAM-D and EEG/ERP).

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https://finance.yahoo.com/news/anavex-life-sc...00076.html