I slightly agree with what you say Eggs but the enforced change of McCarthy really damaged us. When Barry came on he just sat on the toes of our back 4 which had Gaye chasing shadows as their midfield played around him. That in my humble opinion was why we became encamped on the edge of our box.. I don't think it was for lack of trying.. more down to lack of quality in depth.
..I agree that Barry didn't provide the same running power as McCarthy and largely sat in front of the back four but the real problem to us being under the cosh was our 4 offensive players. Neither Lennon or Valencia pushed their full backs back by getting at them and beyond them. Barkley was totally dominated by Henderson, we needed him driving forward but he was ineffective virtually every time he got the ball. Finally, the team really needed Lukaku to keep hold of the ball when it was played up to him, treat it like gold dust, run the line and run the channels, picking up free kicks to relieve the pressure.
It's a shame the performances of those 4 are being forgotten as folk gang up on Barry.