Assuming that 21 months and 121 charges are accurate, then it's not likely Apple will be replacing your battery. Those readings indicate that you're rarely using the battery and discharging your battery once a week over two years will likely result in a bad battery. I'm no expert in how battery works and some will argue with what I said doesn't matter and the battery is defective but constantly connecting to power will result in a shorter battery vs. using the battery occasionally. I don't think the 300 charge/80 percent will apply here.
(read: http://www.apple.com/batteries/notebooks.html)
I am beginning to accept the notion that this is all my fault, not USING the battery, it went from here☝ to there☟ in just one day, and now ✠ RIP

Thank you all