I thought his artwork quite suited Autocracy and Monstrosity and did not mind it at all there. Sometimes the proportions are out (Scorponok is huge, but then Hun-Grrr in beast mode is just as tall, that should mean Hun-Grrr is the size of Broadside in robot mode!) and sometimes it is dark but I thought it really worked for these two series.
That said however his artwork in all the other TF comics has really not appealed to me at all and I would have to say he has been one of my least fav TF comic artists.