Napoleonic Cannae

Sorry if this has been done before but the search here on AH didn't bring up any matches.

So WI if Napoleon achieves a Cannae type victory at the Battle of Eylau in East Prussia.

http://en.wikipedia.org/wiki/Battle_of_Eylau

I know Eylau was considered the first check for Napoleon and his Grande Armee but what effect would another titanic victory have on the rest of Europe? Would we see an earlier peace between Russia and France for instance?
 
Hmm. The diplomatic situation would be much like after Friedland after OTL: Prussia without hope, Great Poland in revolt, and neither France nor Russia able to attack the other, leading to their rapproachment. But there would doubtless be butterflies. You'd want to speak to the military experts for that. I'd imagine that there would be some tactical effects on each side, and that diplomatic consequences would kick in later.
 
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