Quote Originally Posted by loophole
I like the movie designs because of how different and how thats how they probally look like if they did come to Earth
Not only that, but it's more like how Transformers would look if they were from an alien world and if they existed in real life. The reason why more traditional TF designs are unrealistic in real life compared to the movie designs would include:

1/ Why would alien robots completely unrelated to humans happen to have unnecessary human-like features, such as a humanlike face with nose, mouth, teeth etc. - the movie Transformers have mouthes, but they don't look like human mouthes!
2/ Traditional TF designs really restrict movement. Anyone who's ever done TF cosplay would know this. Animators and comic artists cheat by morphing and dislocating parts to do things like make TFs cross their arms. This would not work in a photorealistic setting, so designs had to be changed to make their bodies more streamlined.