What he's saying is, knowing where you fall within a class isn't as valuable to know as it might seem. You pretty much know by SSN whereabouts you'll be. Beyond that is solidly within the 'nice to know' category.

And a class of 40 could be, say, 38 M88 NYC and 2 717 NYC. Then it's all much ado about nothing, 'cause pretty much everyone's going to the Maddog in NYC and the rest are still doing nearly the same.

I'd devote all the prep time into following the threads about AEs and future fleet growth instead, found in the Latest & Greatest thread and AE discussions.