When everyone has calmed down a bit I think we'll look back on this World Cup as a terrific tournament. It's had some huge shocks, some phenomenal individual performances, some huge team efforts and plenty of controversial moments. 

It's re-iterated how important the back row is to winning the game. Particularly how important it is to have a balanced back row and an out and out 7 (even if he wears the 6 shirt). Warburton, McCaw, Pocock and Dusatoir... each semi-finalist had an outstanding open side. 

Whereas the big sides that departed early? Well Ireland picked 3 No. 8s, only to find having a host of ball carriers is pointless if the opposition tackle the way the Welsh did. England insisted on picking 3 6s for most of the tournament and wondered why they struggled at the breakdown, with front five forwards asked to do the work put in by guys like McCaw and then looking puzzled when pinged (maybe your not as sneaky as you thought Dylan!). Scotland I guess you have to feel sorry for. Barclay's their best bet. It's just that Leguizamon is better.

And the minnows who achieved more than anyone expected? Well look at the difference in the USA's performances when Todd Clever was playing. They gave Ireland a harrowing time. But were over-run by Australia. Georgia showed that the belong among Europe's elite (fat chance fellas, sorry, we'll see you in 4 years time) and Mamuka Gorgodze was a big part of that. 

So what can our 7s learn?

A lot has been made of the "jackal"... of the way these players can arrive first, keep their feet and force a turnover or win a penalty as a desperate tackled player clings to the ball. But it was secondary to me. Look at Dusatoir. I don't think I saw him arched Brussow like over the ball once. Yet France turned NZ over 4 times in the final to the All Blacks 3. 

It's arriving first that matters. For France that meant creating slow ball and then forcing the turn over as Nallet and the big beats arrive while NZ, or England or whoever, were still organising their next forward pod to carry it on. Sure the jackal is a great asset. But it's the 7s engine that makes him count. It's the only way to get their first time after time. Richie McCaw runs like a boxer I'm told by kiwi friends. Out in the morning before anyone else is up, putting the miles in. If you're fitter you'll be first.

The tackle count is key. Pocock made 26 against South Africa and 24 against New Zealand. Dusatoir made 21 against NZ and 22 against Wales. Sam Warburton made 21 against Ireland (and his back row partner Lydiate made 24). In fact Wales victory over Ireland is probably the best example, despite Pocock essentially beating SA on his own. Because Ireland went into that game on form and dominated in terms of territory and possession, yet they looked like beaten men half way into the second half. Because every time they carried they were hit and taken down by the same man. They were sapped, slowly by a tackling succubus and as they became uncertain of where to run Wales became more confident of the result. 

You're not a footballer. Don't moan at the referee. Don't complain or whinge. Just get on with it. The grace shown in defeat by Warburton and Dusatoir, and the down to earth attitude of the game's best current player (that's Richie, sorry Dan but you just ride on his coat-tails) show the attitude these guys have. They're uncompromising, but never nasty. That keeps them off the referee's radar. They know that criticising the man in the middle is pointless, because if he's your friend you'll have the upper hand each time you find yourself in a grey area. And if you're doing your job the grey is where you'll live. 

There's nothing glamourous about your job. Except winning. How many dazzling breaks did McCaw make? How much more eye catching is Stephen Ferris than Dusatoir? The best 7s are a cog in attack and a wall in defence. Of course it's nice to make a big carry, be the person who receives that final pass. But more often than not one of your team-mates will be doing that. While no one else will be going about the boring business of hitting every other breakdown for 80 minutes. Of standing in the guard position the moment the tackle is made. Do that hard work and you might not win many MOTM awards. But you're go a big way to improving your teams win rate.

So, who's England's 7 of the future? Tom Wood seems to have the attitude. Armitage that jackaling talent. Saull the motor. Rees that well-honed understanding of what he can get away with. Fingers crossed one of them develops, because Warburton and Dusatoir look like being at the top of their game for a few 6Ns yet.