Its normal if you have a good tactic. You should ask in the post your sucesses section and see if its normal there. Your more likely to get a reply there
He's not ridiculously far off that in real life......so probably. Although I do find that normally he gets fewer goals on FM than he should-simply because FM can't replicate Barca's style of play properly....or his role. Yet.
downloaded an awesome tactic from here the other day as im useless at them myself, used it for half a season and davd villa ended up with 75 goals in 53 games, so id say a big well done on your part for making a tactic that is sound, if only i had a brain