The graph is misleading because it misleads the reader into believing that college grads and non-college grads made the same real wage in 2007, disguising the fact that there was a substantial gap between their wages at 2007. The fact that both wages fall a similiar percentage relative to 2007 only tells us that the gap between both wage classes remained the same, in effect telling us nothing.
There are entire classes of misleading graphs that are misleading despite being technically, literally, valid.
There are entire classes of misleading graphs that are misleading despite being technically, literally, valid.
Your snark is not helping.