You guys are pretty spot on. Generations Blurr does not evoke g1 blurr at all- the most similar thing is the colour scheme.
The figure is as said, based on IDW Blurr and I think it does capture the essence of that design, however as one places critical eye on the differences- then all that physics comes into play.
Barring the bulky and non-aerodynamic attributes- I think my main criticism is actually the head sculpt. I think taking on too much of the drift mould was detrimental- if one looks at the IDW blurr- the head spikes are much more streamlined- also the antennae- they are much more horizontal, head spikes are further back from the cheeks and do have some sense of g1 blurr's head if one looks closely than the vertically spiked ones on this figure.
Overall, I bought this to have the character- I don't think the toy is ugly but it does the job as best as it can given the remoulding from Drift- and I'd rather have a classics blurr than not have one.