Good find, Kai. I found that website a week or so ago, but last week was really busy at work, hence no time to do much with the site (no hispeed at home.). I'm going to check out more this week...
So that gives details for 21 Ferdinands destroyed around Ponyri. That means 21 out of 45 (one battalion committed), of which ~7 were out from the start due to mechanics... that means 21 out of 38 operational vehicles were lost and/or captured. Not too good, if those numbers are correct...

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Seriously, all today is missing is free cotton candy and the annual Bay State Hooker Parade to make it any better.