my intepretation is this...
the 1st guy is a bit flash, with his tightly cut suit and shiny tie, he seems to be the life and soul of the office, but as soon as no one is watching him, he is actually quite sad (eating a take away on his own for example). As he comes out of the office, and sees the 2nd guy, he realises the 2nd guy is everything he wants to be, well dressed etc, and he drives a golf (understated and classy), and he realises he will never be that, and he is the great pretender!!