Oh, probably Elastique isn’t available in all the different versions and you don’t have Pro I’d assume. The link below compares what is in the various versions.
Rereading your initial post it sounds like you might think these ‘Standard’ Algorithms aren’t for time-stretching, but they are. Elastique are in general higher quality, but material dependent not always. There are descriptions of the various Algorithms in the manual.
If you are just sorting out time-stretching in Cubase you might find this useful: