Ever since WarWithin, I just figure the G1 Dinobots were created and Programed with Cybertrons best Guerilla taske force bots in mind. Wheeljack couldn't get them perfect (aka "DINOBOTS SMASH!!") but was able to reproduce 60% or so of their original prsonality. Or if you wanna think of it another way, TM2 Dinobot was a clone of the original one with a completely different spark, but in time BECAME a resurrected orginal Dinobot (more or less.)
Thing is, War Within leads to a continuity where Grimlock and the other Dinobots simply came to Earth in another shuttle after the Ark, if my memory of DW G1 V2 is right. The DW comics tie into their own continuity rather than the cartoon... War Within contradicts the G1 Cartoon's backstory in many places anyway. We're stuck with 3 distinct G1 continuities: US Cartoon, UK/US Marvel comic, and DW Comic, which War Within is a prequel to, and which /could/ be the 'composite' G1 storyline that Beast Wars follows on from (it's certainly hinted that that's what DW wanted it to be).
The 'Bash is excellent, my only comment is that he needs a bigger butt