It is obviously a mistake, they probably just mean it is the first proper Bon Jovi concert at a UK Arena, as opposed to smaller venues like the Shepherds Bush Empire, which is a theatre isn't it? They did play at something at Wembley Arena in 2002 I think, but it wasn't an exclusive, full Bon Jovi concert I think.

Anyway, it doesn't matter, and no offense, but it's pretty sad that you'd get angry about it.