I don't know what it's about. People aren't going to buy two shirts unless they did anyway. Maybe it's just about getting fans who don't like one to buy the other? Maybe it's just an attempt to be original?
To be honest when they asked us to vote I couldn't make my mind up, they're both great. I'm glad they've gone with both although it will make me more curious as to which one I'm getting. Probably white because I don't think it has the viking symbols embossed over it.