"Corel says that it increased the Smart Proxy feature's speed by 300 percent over the preceding VideoStudio 11.5. Furthermore, Corel VideoStudio Pro X2 is supposed to be optimised for quad-core CPUs and to take advantage of newer Intel CPUs that recognise SSE4 instructions, thereby providing a big performance boost on systems using them.
Corel VideoStudio Pro X2 has a slightly better range of features than Adobe's Premiere Elements 7, and VideoStudio's tools are easier to see than Elements'. Elements still has a few unique features that we like - for example, better timeline features. We'd say VideoStudio X2 is the better choice if you have an underpowered PC, and Elements gets the nod for those with fast PCs."