I feel that this is not really a fair comparison.
The VXR is Vauxhall's top spec performance car.
The RS is Ford's top spec performance car.
To start with the Corsa VXR would have to be compared with a Fiesta RS. This is not possible as Ford do not do a RS version. So surely the equivalent of a Fiesta ST would have to be something like a Corsa SRi.
No comparison there, Ford Fiesta ST wipes the floor.
Now, the Astra VXR would be a direct competitor for the Focus RS. Again, Ford wipes the floor.
I disagree. To say "a fiesta RS doesn't exist but since the 'ST' is Ford's 2nd best, we'll compare it to vauxhall's 2nd best" is utter rubbish.
Corsa VXR and Fiesta ST is a fair comparison (given the clear similarities in power, engine cc + turbo and price)
The SRi comes in a 1.4n/a or a 1.4T producing no way near the same power as the ST nor costing as much. Fair? No.
(previously came in a detuned VXR engine pre-facelift, but let's keep comparisons in the same generation, ie Corsa facelift and Fiesta facelift)
The Astra vs. Focus is a bit more difficult. Considering the power and price differences.
Astra H VXR 236bhp vs mk2 Focus RS 300bhp... how is that fair? Then the prices...
Ford have the upper-hand with the 'RS' line, they have another level, whereas Vauxhall don't.