Why would any corporate purchase consider tablet in the first place though. I have not seen a use case of tablet in business except for inventory management (UPS, installer, 7-11).Still a x86 Win8 tablet in the Transformer style will still be cheaper than a combo of an iPad/android tablet with a 'proper' desktop/laptop.
I also think you're looking at it from the consumer perspective. I think the enterprise perspective, with all the security features, virtualization options, centralization of IT management and Office, will consider the propositions differently.
If you work in an office, there is no reason to detach the keyboard.
I think transformer form factor is 90﹪ consumer oriented. Tablet is 100 percent consumer.