yeah WAIT A SECOND.
How did OP count posts after like system was introduced?
Going by my average (says I average 2.56 posts per day) and assuming the like system was introduced on Feb 1st 2012 (I think that's right), then I have a like ratio of about 1.17, clearly higher than some in the graphic!
Not to mention I have probably been less active this past year so that average doesn't tell the true tale.
I demand a recount.