They are more or less the same piece of hardware with different software in it. There are no reasons a console wouldn't do the same things that a PC does other than the devs put limits on what you can do with these. Consoles are crap made for stealing kids money
But it does seem to have better hardware for the price which they usually get back from games so unless u buy a lot of games it's probably a cheaper option. That said I am strictly a pc gamer playing indie titles so take it with a grain of salt.
It's also not cheaper when you consider the cost and limited choice of console games compared to the almost limitless choice of things to play on a PC, many of which are free or can often be heavily discounted. Also I hear your can use your PC for other things too!