Is Black Ops 2 A Huge DLC ?

 Before this question can be answered with some sort of authority first we must look at some of the facts that cannot be denied then some facts that can be argued from different angles .
  Not a whole lot has changed since the first revolutionary COD Modern Warfare . One can even argue that the original Modern Warfare was the only revolutionary COD game , but lets look at the facts first before we get ahead of ourselves. Sure things change from game to game like the kinds of maps and the perks , weapons and attachments but wait a minute ...... was there ever a different engine? No ...... in fact all COD's are made with the same engine for some reason . Sure the first Black Ops was different in many ways from the traditional COD series but even in that game the weapons , perks , attachments , ect are still all basically the same minus some tweaks to the same old engine graphics wise but an engine can only be tweaked withing its limitations and since Modern Warfare those limitations have remained the same.
  Taking into the fact that its all always on the same engine with the same guns , perks , attachments and kill streaks with only small additions to all those from game to game ...... hmm kind of like a DLC .... you purchase extra content thats adds additional maps , guns , attachments and perks at the most . I know what your thinking .... well the map packs only give us new maps not new weapons and attchments and such-right? Well if a map pack is only 10 or 15 dollars and comes with maps then why is a " new " game 60$ and thats not even considering hardened editions or even Call Of Duty Elite for that matter and they are only screen over's with new weopons , perks , attachments and kill or point streaks and keep in mind when I say new I mean the few new additions added to the new releases .
 Now I love Call Of Duty and will always play it and placed top 100 for kills on most games so I'm just being reasonable here and trying for the life of me why they cant just sit down and create something new and revolutionary while still keeping that familiar COD feel? Its the 21st century why not use a new improved engine( there are plenty out there ) ? Why not greatly enhance the graphics and gameplay beyond new maps and guns ? Lets just face the facts .... as badly as we all want Black Ops 2 me included we are only getting a 60$ Black Ops DLC with new maps ect . Wait ... look in the preview -dogs- looks like there's not going to be a whole lot of change in reality . Right now all we can do is sit back and wait and hope that I'm wrong .... maybe Black Ops 2 will be more than a glorified DLC . Maybe it will change the way we see and play the COD series . I really do hope I'm wrong.