I assume Ranasaad
was referring more to the volume (and using a Vengeance-sized dose of hyperbole), which is in the vague region of 8x the original Enterprise and not their lengths, which are...
TOS Enterprise: 289m (everything, ever)
ST'09 Enterprise: 725m (ST'09 Bluray, ST: Art of the Film)
Vengeance: 1460m (ILM STID scale chart)