Here, you can find some of the real world buses, compared with the MM2 buses made, and you can see how accurate they really look, to the real thing!
Here we have the ALX300's, which look almost the same!
Here we have the Volvo BT7L buses, and you can see how much they look a like, expically that front windscreen!
Although both these buses are in different livey's, they are the same model. You can see how similar they look from those classic round front headlamps!