Its preety obvious that having a strong defence is important but if we have to choose whether we are going to have an average defense and strong attack or viceversa its clear that its better to have a strong attack.
In 2011-12 before we collapsed after an Arsenal loss we had the following results at home.
Liverpool 1-1 Sunderland
Liverpool 3-1 Bolton
Liverpool 2-1 Wolves
Liverpool 1-1 Man United
Liverpool 1-1 Norwich
Liverpool 0-0 Swansea City
Liverpool 1-1 Manchester City
Liverpool 1-0 QPR
Liverpool 1-1 Blackburn Rovers
Liverpool 3-1 Newcastle
Liverpool 0-0 Stoke City
Liverpool 0-0 Tottenham
8 goals conceded in 12 games. Only 20 points achieved. If you dont have a strong attack you are dead. Its too easy for teams to play for a point against you. Once we are scoring enough goals to make top 4 then we can worry about the defence imo.
The problem for Rodgers is that he struggles with balance quite a bit. Against poor opposition we can control some games by dominating the ball, scoring a few goals and keeping it tight at the back. It's not a common occurrence though and often we either sit way too deep and offer little in terms of offensive pressure, or we attack quite boldly and the defence is exposed quite badly. This year I wonder if Rodgers will, to use a boxing analogy, trade punches with teams in the hope that that particular tactic will be enough for us to get top 4. It was in 13/14, however some of that was down to the formation of a perfect storm: Suarez having a truly outstanding year, Sturridge staying fit for most of it and combining with him so well, Gerrard excelling in his deeper role, Sterling having a break out season and the fact our rivals were not in prime form. That's not to detract from Rodgers, and I'm not saying he had nothing to do with making those things happen, I'm just saying they all happened amazingly in the same season. Nothing either side of that has ever look like happening under him, so of course the question is whether the 13/14 season was a freak year or it is what happens when Rodgers gets it right.
If he goes down that road though it's quite the gamble. Benteke, Firmino, Ings, Origi, Sturridge. By and large it'll be up to those guys to score the goals, with Coutinho, Lallana playing key supporting roles (Ibe I'm not sure can be relied on yet to score a lot). There's a chance they'll all click together, and with that we'll score plenty and the defence won't be an issue over 38 games. However, so much depends on Benteke and Sturridge in particular. Can Sturridge get fit and play 20 or so games? Can Benteke be the bully he's so often been against us? Can they form a partnership together? If the answer to those questions is yes then I think we'll be OK. If it's an no, or only one of them score the goals we need, then we'll have to do something we haven't done in 3 years under Rodgers' stewardship: Stop the opposition from scoring regularly.
The problem we have is that we just don't look like keeping a clean sheet. Even when we switched to a 3-5-2 and had a bit more success I always felt that what we done was simply add a couple more sandbags to the lapping water. Sure, it'll hold it back for a while, but it'll get through eventually. And I know a clean sheet record was broken, but it was mostly against the weakest attacks in the league and the system ultimately failed again when the better opposition turned up. Teams do not need to do much to score against us. Isolate the defenders and force errors. Play for some corners and free-kicks around the box and get it in there. Play on the insecurity of the goalkeeper by firing in long shots and closing him down to put pressure on his average distribution. Once teams do a couple of those things then you know it's only a matter of time before we concede. It's not good enough. In the league you'll probably get away with it if the attack is much superior, but it won't win you a title and it certainly won't win you any silverware (unless you win every knockout game 6-5 on aggregate).
So, the key word is balance. Score some goals, play the best football possible but for the sake of every fan around the world restore some order in there. Get the defence, midfield and attack synchronized and don't make it so easy for the opposition. It sounds simple, but if we do that then 4th will be ours to throw away.