So you are saying - he should be blamed for being overrun in a duel by someone 15 cm taller than him and who is a brilliant header of a ball ?
Why not blame Kagawa who was sleeping when losing the ball
Why not blame Ferdinand who failed to put Lambert offside by not being wary of the striker (and don't tell me it's Rafaels job to mark Lambert when he is the only Soton-player in the box)
Think it comes down to the fact that yes anyone can make a mistake but it's when these same mistakes are made over and over that annoys people. Rafa is small and got targeted by Southampton. There is every chance lambert would have beaten him in the air anyhow but his positioning and body shape was poor and it cost us as it did vs Everton he needs to work on his concentration and awearness