I don't think the Cupra has ever been 150bhp? There was a different engine with the K03 turbo very early on, but that still made 180bhp as far as I know?
 
I would think the VTS in standard form, 'would' feel as quick as the Leon in standard form. But on open roads, where power is always a concern, it would be a differnet matter. The Leon is a cruiser's car. Whereas the VTS is a very nippy hot-hatch. Dispite what people say about it's reliability, it goes well.