The media really do have less of a problem telling a foreigner to go than telling a fellow Brit that their time is up. The kind of jobs-for-the-boys nepotism which gets incompetents like McLeish and Bruce their jobs (see a connection anyone?) exists in the media as well, and twofold: firstly, journalists are mates with their good, old fashioned British counterparts in the dugouts; secondly (and this is deadly serious), they don't want to do anything to antagonise Ferguson.
The second point applies to us, but also imagine if it had been Carlo Di Abroad who'd been manager of Liverpool this season, or Philippe Le Baguette etc. Think above all of Roy Hodgson who, despite being as Cockney as jewwied eews, feels like a foreigner who's just come in as he's actually worked outside of this country for the majority of his career, therefore not having the opportunity to build a mateship with the media - so he got the treatment good and proper.
Houllier said that foreigners get a harder time in the media, as a general rule, than British people, and he's right. It's what's saving Eck from the negative coverage his incompetence would have merited, and which any manager from abroad would have got.