The OP is correct imho.
To all those who disagree with him, imagine for a moment what will happen if, in the next few games, we get another injury or 2 to our more attacking players. If Tevez went out long term we'd be well and truly stuffed. Judging by what's happened in the last couple of cup games, without AJ (long term) and Balo (short term, but, who really knows) the best we have to look forward to as replacements are Jo and Milner. Mancini can't think that there is anyone better because he would have chosen them by now, so it doesn't look like he thinks one of the younger players is yet ready.
The OP is talking about a squad here, not just the first 11. Look at the squad, because you are as good as your reserves. Ours aren't good enough, and the squad's short of numbers. If he doesn't add today, we'll have to be very lucky on the injury front to stay top 4. Personally, I think we will be caught by chelsea and spurs if he doesn't strengthen.
The whole squad situation had to be reassessed in the light of the various departures, injuries to Balo, and then again to AJ. AJ, despite his short comings, has been very important for us - our game changer occasionally, and now we won't be seeing him again until late in the season, if this season at all. We don't have a big enough squad to deal adequately with these injuries, but, at least they've happened at a time when, fortunately, the club had the possibility of doing something positive about getting in replacements, and when, for once, we had the funds, and it was worth doing, ie, we still had the possibility of winning something. With our resources, we shouldn't fail to land someone today - i'll be well peed off if we don't. I'd like several arrivals but it looks like they'll be none.