I don't have figures for you, but some food for thought - a) 'wind-carved' rocks are not really carved by the wind itself but by particles carried on the wind,

I don't have figures for you, but some food for thought - a) 'wind-carved' rocks are not really carved by the wind itself but by particles carried on the wind, and Mars is regularly subject to large dust storms (see https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of-martian-dust-storms https://www.nasa.gov/feature/goddard/the-fact-and-fiction-of... - sorry it's a NASA link, hopefully everyone can see through the grifting, or whatever), b) the vast timescales involved - who knows how many hundreds of thousands of years that rock has been sitting there, slowly weathering away?