I don't know about more efficient, in terms of goals at least. Garcia scored 8 for us, and Giuly currently has 7. I'd like to think he can get at least a couple more before the season ends.
I don't think his injuries have helped, people don't seem to take this into account, he started the season in top form, then was out injured for a while, and has also picked up a couple of other small injuries during the season. Add to that the large amount of times he has been taken off during matches, he has struggled to reach 100% sharpness after the first injury.
His form has been up and down, but name someone other than Puyol who hasn't been the same. It's an odd thing about this team, when one star has a bade game, another has a good game. I also don't think he can be used properly in the formation we use. Belletti gets down the right to give width also, so he and Giuly are effectively operating in the same offensive space. You can say neither is crossing particularly well, but a HUGE problem with asking guys to get wide and get crosses in is there is no-one to cross to!!!! Giuly is asked to operate wide right, and come inside a lot, and it's only when he comes inside that he starts to shine, because he gets involved in the game. Eto'o isn't a "near post" kind of striker and we only play with one, so Giuly and Belletti aren't going to be much use, and they will look worse than they should because they are playing their game but it doesn't gel with the team style.
If we, for some reason, played a game next season with Maxi and Larsson up front, Giuly and Belletti (and Sylvinho) would DOMINATE. Larsson would make front post runs, Maxi would float near the back, the 2 right wing guys would have someone to cross to, and their natural games would be effective in a team that suits them. Anybody can look bad when they are asked to get wide and cross but there is only 1 forward to cross to, and he can't head the ball anyway.