Bang Bang poster is better than happy new year poster! Bang Bang one is more flashy and is a one hell of a good looking poster! HNY one is also good, but that one wasn't able to create such huge impact/hype upon release.. Clearly BB poster is a bit notch higher!
But Teaser aana abhi baaki he mere dost!
Disagree to following :
HNY Poster = 1000 X Bang Bang poster
Bang bang poster = 100000 x HNY Poster