I can't see where most of you read "John & Chris call themselves dire straits". The poster says "from the legendary dire straits" which is completely different. The discussion if John & Chris are allowed to call themselves Dire Straits is completely irrelevant. I doubt if they even think about it... Yes, John & Chris played together under Dire Straits but they don't pretend they ARE Dire Straits. So, what's the problem?
It's just a reminder for people who don't know who John & Chris are, that's all. They don't "sell" it like a DS gig... come on...
And people, don't forget, it's just a freaking poster. Enjoy the gig!