Myriad Pro Numericals vs Capitals Size

Hi guys,

I recently had an interesting discussion with a client who had raised concern that the numericals in Myriad Pro were visibly smaller than the capitals (eg 24F...the 'F' sits higher than the 24).

I checked several other fonts by comparison and noticed alignment varied across most although it does appear slightly more prominent in Myriad Pro.

My basic assumption is that it follows the principles of lowercase, that the differences in height create a visible shape difference and assists readability versus if they were all exactly the same height which would create a more solid block.

But I can also see my client's point...in certain instances such as the example mentioned...24F...the '24' looks almost .25pts smaller than the F.

So was is the reason behind the difference in heights in Myriad Pro?

Cheers,

Gatorage