CISCO Dynamic Multipoint VPN is an approach to support automated build of IPSEC VPN’s from a remote client or gw device that might have a dynamic IP.
Initially a remote peer creates a spoke to hub connection to get DMVPN configurations and traffic profiles, then later spoke to hub and spoke to spoke traffic routing is possible.
SpeedFusion VPN also provides automated VPN build of PepVPN tunnels (based on IPSEC) from remote clients to a hub and / or peer to peer (with full support for dynamic IPs). It can either be configured manually on each peer/hub device or fully automated using InControl2. Point to Point connections can be Layer 2 or Layer 3.
That is where any similarities end though - since SpeedFusion is not your typical VPN technology.
On top of providing secure point to point tunnels, the power of SpeedFusion VPN comes when there is more than one WAN link on a gateway (either at the hub or spokes). When this is the case, Speedfusion VPN can also provide bandwidth bonding (bandwidth aggregation), seamless hot fail-over (at a packet level), packet loss compensation (WAN Smoothing) and intelligent granular control of traffic flow within the tunnel controlling how it flows across the available multiple WANs (Outbound Policy over bonded VPN tunnels).
You can learn more about SpeedFusion here.
These multi-WAN technologies combined with how insanely easy is it to configure SpeedFusion VPN is why it is better for most applications than CISCO DMVPN.