Expect all the counter arguments soon then.
So here goes ....Counter Arguments – Suitshop.co.uk v suit-shop.co.uk
• This is not a good enough test at all – you can’t just test holding pages – it should be done on a mini site or better still proper sites
• At one point we had 100’s holding pages live ( hyphen v non hyphen and when I analysed results there was very little between the two by my recollection)
• This is not an equal test – suitshop.co.uk is a drop whereas suit-shop.co.uk is a new registration and a drop "could" carry a lot more power from an SEO perspective
• Suitshop.co.uk has more back links – 5 external backlinks and 3 referring domains ( according to the link testing I did)
• Suit-shop.co.uk only has has 3 external backlinks and 2 referring domains ( according to the link testing I did)
• One could be being penalised as they both have very similar content and if one is to be penalised it will likely be the one that Google views as the newest (see below)
• Suitshop.co.uk has an Alexa ranking whereas suit-shop.co.uk doesn’t – I don't know why this is but am guessing this is probably because suitshop.co.uk has been live before? (but I could be wrong) whereas suit-shop.co.uk hasn’t and alongside this adding to Google's perception of what is the newest this is another thing that could distort results from an SEO perspective .
I could go on ... but I will wait to be shouted down first