So one of my guildies told me that the Account wide honor was on the PTR and Beta so I decided to do a bit of testing.
The Prestige levels are not 1-1, I don't know if this has been mentioned yet but I was kinda surprised by this. I was expecting it to be a pseudo squish.
Its a bit rough on the PTR ATM, like it does not give you specific honor numbers, it just tells you your current Prestige level, the next milestone (Every 10 levels) and a vague circular bar indicating how close you are to your next level.
On live, Hunter Main is Prestige level 13 with honor level 34 509/950, but on the PTR I'm Prestige 68 with the circular bar at about 1/2 full.
Time for Math!
The first Prestige level take about 22,000 honor to get and every prestige level after takes a total of 44,000 honor.
This means my Hunter has a rough total of about 578,809 honor, give or take a few hundred.
After dividing my total honor by my PTR Prestige, I end up with about 8,513 honor per Prestige level.
copying over my second highest prestige character, my Mage, pushed me to Prestige 77.
On live my Mage is Prestige 2 Honor level 16 62/850
Redoing the math to double check gave me 8,701
That's pretty close to my original calculation, I can't take the circular bar into account in these equations as they do not give a number value but I doubt I'm to far off from the actual number. I would put the real honor per prestige number at 8,000.
Primary source for numbers:
http://www.wowhead.com/getting-into-...r-and-prestige