Yes. Rotatemesh rotates all the vertices, Rotateentity rotates the property of the mesh itself.
It's more obvious with ScaleMesh and ScaleEntity where Scalemesh enlarges the mesh by a factor and ScaleEntity with a percentage. I used to get them confused, can't of hard to explain it.
It's best really in your modeller to make sure all your models are the correct way round and size before you export them so you don't need to alter the mesh when you get it into blitz.
It's more obvious with ScaleMesh and ScaleEntity where Scalemesh enlarges the mesh by a factor and ScaleEntity with a percentage. I used to get them confused, can't of hard to explain it.
It's best really in your modeller to make sure all your models are the correct way round and size before you export them so you don't need to alter the mesh when you get it into blitz.