I've just sold a '13 MK3 Focus ST to buy my second FN2, so I obviously prefer the Civic.
The Focus was faster in a straight line, sounded lovely with the de-res pipe and Mountune intake, and handled on a par with a FN2 on Eibachs with FRSU but so much better dampened over the Civic.
However the steering rack was odd on the Focus, very quick with very little feel around the centre. Plus the Focus went back to the dealers for warranty work 4 times in my ownership including a new steering rack. Oh and the dealers were shocking, didn't carry out work properly and lied to cover it up.
I've never owned a Renault, but the RS Megane is test drove before the Focus didn't feel like it was held together properly. I gave up on the idea when the seat tilt handle came off in my hand.