Since I bought one set and had some problems with it, I wished to make a quick review on some points regarding this set going through each dinobot. Images of this Generations set, like the one below, can be found here.
The main difference is the inclusion of the new classic styled G1 heads and that all five Dinobots being there at once (Slog had to be ordered off Amazon to complete the SDCC set) but there are other deco differences. In general, this Platinum Generations Dinobot set has less colour than the SDCC set except for the first one I will mention.
Slog:
Platinum Slog's arms aren't chrome. Also, the neck on SDCC's is slightly painted, this version is all clear with a fully painted head. However, this figure, aside from the head, has the least visible differences from the other G1 deco overall.
Strafe:
No picture has done this new head justice. He actually has a very long crest along his moving well past his head on from the front to the back (with the back being much longer). As for deco, the only paint on his arms is the yellow that appeared on the SDCC version (no green) and the back of the wings have nothing on them aside from the layer of chrome. There are differences in where the paint is applied on the chest where the Generations Platinum version has four dark grey/black triangles painted. What I find funny about the cover art is how toy accurate it is, and even includes the tails curved the same direction (a flaw still not corrected in this release), while the back shows a version of the toy with the tails pointing the right way.
Grimlock:
This toy has some major quality issues. The robot forearms and shoulders split, where the molded halves connect, whenever they ate rotated. This can happen on either side or both (I returned a set for Grimlock and Slug and thus held two versions of each). One of the Grimlocks I had also had silver paint splotches on his red T-Rex heels and had a loose peg which made him unable to keep his robot feet connected to his forearms. As far as a difference with the SDCC version, this Grimlock lacks the red chrome and blue paint on his legs.
Snarl:
Snarl by far has the greatest difference with his SDCC self since all the gold chrome was replaced with standard silver chrome. There is no yellow found on this toy anywhere aside from he cover picture. Speaking of the box, the picture in the back depicts the translucent dino head having a silver streak across it but this is also absent from the final toy. The head is just clear plastic with red eyes.
Slug:
Slug also has no yellow or gold on him aside for his painted eyes. However, he does have the only tinted chrome on any of these dinobots, which is the blue on the dino's front legs, though the shade of blue will be different on any toy. I had one which had light blue on one leg and dark blue on the other. The tail joint is very tight and the plastic connecting the tail to the body is very weak. My first version crack while transforming and eventually fell off.
So in general, while the deco is not as good as the SDCC Dinos (aside from Slog) and the quality is questionable on two, the heads are great (especially on Strafe) and the deco is still very nice with all the clear plastic and chromey goodness. We all had a lovely day together and I am overall very happy with this set. However, I did only pay 75$ US for it (plus taxes) and was lucky enough to get a replacement set.
PS: This is who is advertised on the back of the box:
And I feel the same way. The idea here is not that these must be bought on site to finish a classic collection but rather for those who couldnt get the SDCC toys or didnt want to pay the high price tag (like myself). 
Heigh hoo Silver............ 
