Migration of WSS 3.0 to SharePoint Server 2010

I have some ideas grabbed from the internet regarding the migration of WSS 3.0 to SP 2010 server. My thoughts are as follows.
1. WSS 3.0 (with SP2) can be migrated to SharePoint Foundation 2010 directly.
2. The migration of WSS 3.0 (with SP2) to SharePoint Server 2010 is possible by attaching DB upgrade only. The direct migration is not possible.
3. But the WSS 3.0 (with SP2) can be migrated to MOSS 2007 first then to SP Server 2010
Ref: http://technet.microsoft.com/en-us/library/cc262747.aspx