Well, at least we're more entertaining for the neutral viewers..
In all seriousness, whilst we look a damn sight more dangerous and attractive going forward in a 433/451 for some reason we also are considerably more vulnerable defensively, despite what some people say. Personally I think it is worth persevering with as a tactical setup (although not with a striker shoehorned in a wide position), but for it to work long term it needs better defenders first and foremost, Tiote (or defensive midfield replacement) to focus on his defensive role and hard working wide players that track back when the opposition full back likes to get forward. It's not just a matter of simply organising the frontline differently, it requires a transformation to our entire team dynamics. For all the flack Pardew gets lately, I think he has been badly let down by Ashley & co this summer in terms of not getting the defensive reinforcements he wanted and has massively overachieved last season, mainly thanks to giving our mediocre defenders as much protection as possible. It may have been negative, but at least it was effective. Discuss.