I just did some quick testing and it looks like the enemies health is randomized to some degree. I don't know how large the differences are or if they could have any real impact on game play, has anyone else noticed this?

I didn't notice that ever. maybe it has something to do with the site you're playing it on?

sorry for reacting almost 3 months after you posted this.

It shouldn't, I'll have to do more testing to see if the total health of the fight changes or just the way it is distributed throughout the enemy team