Curiosity quality native plugins

What is the difference between the VST3 plugins included with Cubase 5 and plugins included in version 8 ? For example I don’t hear any difference in stereo delay . thanks for everything .

Any plugs that are updates of older plugs will still sound the same so there is perfect backwards compatibility.
Maybe some new features are added to some plugs but I think mostly they just update the GUI.

There are of course some new plugs in C8 that didn’t exist in C5.

I guess the most obvious difference will be VST2 to VST3 . But in this case as the two plugins VST3 sound alike. Thanks for your answer