Oh yeah, forgot that! Clutching just a little bit.
I wouldn't say Wales should be confident about anything, Twickenham is a bona fide fortress in the 6n, Wales were the last team to win there in 2012, Ireland's is 2010, France 2007 and Scotland and Italy have never won there.
That's considerably better than Wales in the Millennium (England 2016, Ireland 2013, France 2010, Scotland 2002 and Italy never with a draw in 2006) and Ireland in Lansdowne (England 2013, Wales 2012, France 2011, Scotland never but with a win in Croke Park in 2010 and Italy never)
In this competition you really have to do something special to win away, England have had some bum teams this decade and have lost twice at home, it's honestly inconceivable to me that a Welsh team that is still in it's early stages of development have a chance at nicking a win. Unless England can't get a win in Paris, which is unlikely, the only thing history suggests is that this tournament is heading towards a Paddy's day slam decider with England likely to win.