"Webber couldn't run Woman in White,"
Yeah. Because it sucked. It had nothing to do with the fact that it came from London.
And what about Mary Poppins? That came from London, is not a revival and is doing pretty darn well. Last week it was at 99.8% capacity.
Basically, your theory doesn't make any sense. Shows are going to do well solely depending on how good they are... not where they come from.
"You know, a little orphan girl once told me that the sun would come out tomorrow. Her adopted father was a powerful billionaire, so I supressed the urge to laugh in her face. But now, by gum, I think she might have been on to something!"
--Reefer Madness