As long as you say never or cant or wont. They prove you are wrong.
And they played 442 and made it work with "one dimentional" defenders, so that point is gone too
If you think Mascherano is a ball playing defender, let me tell you he wasn't even a ball playing midfeilder. Not having to defend is ok in the SPL in the sun but when you play in the EPL, where everyone is competive and can beat each other. You need defenders who can defend. It also helps if they are man mountains but as you said quality can get them a long way.
You may favour that boring tiki taka shite, i perfer power and pace. Bayern showed a few years back how effective it is against that barca nonsense. Even Pep hates it now.