Exactly.
It is vastly different when you take into account how profitable we are now in comparison to then. If a company becomes 3 times as profitable but doesn't invest any more money (actually invests less) in real terms it is investing much, much less. The fact is we are the second most profitable Football club on the planet after Real Madrid, but we are spending like a mid-table team. Either Fergie has suddenly become averse to signing players for big fee's like he did time and time again previously, or financial restrictions are being placed on him.
You are picking a finite period where most of our signings haven't become the players that they will/may become. Take your successes, add in the "yet to be determined" and deduct the transfer fees received for the failures and you have great value for money.
For instance:
Nani, Hernandez, Valencia, Young, Smalling, Jones and De Gea in the market are probably worth around £160m. Deduct the c. £11-12m received for Diouf, Tosic and Obertan and worst case scenario you have £160m of talent for around £185m (taking into account 15-17m of your cost inaccuracies) . Add into that the fact that Anderson could still prove to be a quality player and Berbatov might bring in £5-10m if sold and even in this terrible period we have got a similar amount in terms of value vs what we paid.
If you go back slightly further to when the Glazers took over, which was the comparison I made, you have Evra, Vidic, Carrick, Park and Van Der Sar. All of which were superb value for money.