In looking at last year's authentic jersey, it appears as though you're right. But I also think that it's pretty clear that the font size of the #'s is significantly bigger. That's what I thought I was getting. But in reviewing the JCP catalog (which is essentially the same as the NFL Shop), it looks as though all the 'ol school jerseys are set up that way (i.e. smaller #'s).
I really think that the #'s on my jersey look disproportionate to the entire scheme. I saw a couple of throwback Dickerson and Faulk jerseys where the #'s appeared to be the right size, but I'd need to cough up an additional $50 for one of those.