If you do SEO for germany and want to rank in bing - buy an EMD thats enaugh. Sound scarry but it works. But in germany you can earn 2 clicks in a month on search querries wich are searched in Google thousendtimes a day.
if we take a search query, than we say: google something - noone googles something on bing. to google is now a german word for "search in the internet" and has his place in our dictonary.
But I think the differnce normal couldn't be so big. MoosaHemani must be right - I truly hope bing delivers better SERPs in countries where webmasters and searchers use bing.