This is definitely a insane SL especially with a CR of 690. I am not sure how this happened or what type of algorithm used but normally your not seeing limits like this without 800 + scores and some big time income north of 200K. I tip my hat to you sir on this one take care of them, as they definitely took care of you with this card. Congratulations !
I just read this whole thread as I stumbled onto it from Google looking for a new credit card..... So anyhow, i figured what the heck, I'd see what I got offered.... and it appears I won the lotto as well 
http://s15.postimg.org/z9yqppjp7/Screen_Shot_2015_05_12_at_4_13_09_PM.png
I can't figure the Cap. One either....they wouldn't give me an increase on my 8 month old $5K limit QS-Visa Sig. card, but approved me for a Venture VS w/ annual fee for 3x the amount of the QS. After my 30 days between apps is up, I'm tempted to try for the no annual fee Venture One--LOL
BUSINESS 
@Anonymous wrote:I just read this whole thread as I stumbled onto it from Google looking for a new credit card..... So anyhow, i figured what the heck, I'd see what I got offered.... and it appears I won the lotto as well
http://s15.postimg.org/z9yqppjp7/Screen_Shot_2015_05_12_at_4_13_09_PM.png
Oh wow thats amazing. Welcome to the forums. Please post this approval on your own thread. A lot of people will like to see it.
Also, please add your scores and AA0A.
I just read through this entire thread. I don't know if my jaw will ever recover! 
So there is a place called "perfect"! I gave my card to hubby & told him to charge every little a/c part, unit, etc. And just charge the heck out of it! Only 20k limit. Super Congrats!!!!! 
That is by far extra ordinary. And 6 Amex's at one time! OMG! You can be sure I'll be stepping out of the garden for another Cap One card pretty soon! Can I ask if you charge a lot every month & PIF? I have used mine a lot recently & never had a problem with whatever I purchased. BRAVO to you!