Devastator Classics is apparently a re-work of Energon's Constructicon Maximus (seen below in top right row, right corner, on right for comparison).  
Unlike the original Devastator Generation I where there are SIX combiners, Devastator Classics comes with FIVE combinators with THREE of them actually being unique tranformers.  
Devastator O.G.  = 6 different Transformers
Devastator Classics = 5 Transformers - 3 different 'formers with 2 clones used as arms.

 

 

 http://www.seibertron.com/news/view.php?id=9346
http://tformers.com/ig.php?mode=album&a ... 0&start=20
http://www.seibertron.com/news/view.php?id=9346
http://tformers.com/ig.php?mode=album&a ... 0&start=20