See, you need to be objective here.
The VXRs downfalls are that the dampers are crap, and ~200bhp with the aid of a Turbo isn't easy to put on the road. Once you add new suspension+geo (I didn't say coilovers - just decent dampers/properly rated springs would suffice, I'm certain) and the LSD you have a car that is easily capable of putting 250bhp+ down effectively.
The Clio could too, but the difference is that the VXR can hit 250bhp for what is relatively peanuts compared to the Clio.
So what you end up with is two cars that are fairly equally matched in terms of corner entry/exit speeds, but with a VXR that is faster once you're on your way out.
You should not underestimate the Corsa's chassis - it is let down by it's dampers and spring rates - it doesn't respond to inputs quick enough, and when it does, there is too much roll to be consistent. In terms of the rest of the chassis, the setup is very similar, single wishbone/McPh strut up front and rear beam with separate shock and spring at the rear. The VXR shell is specific to the VXR, and is plenty stiff enough. It also has the better brakes.
I do not wish to start a Clio vs. Corsa argument on here, there is just no need for it, but having had both, I feel I'm in a good position to offer a completely objective view.
Out of the box, the Clio is better and there is no doubt about it, but the Corsa doesn't require much to make it right, and really is sublime to drive as far as super-minis go.