xD I mean, you can get him to low HP, he uses undying rage and puts all effort into running away, he has 6 seconds guaranteed life because of his ulti, that means 6 seconds for him to run, thats plenty of time for him to spinning slash past a wall, use flash and run :S
Seriously, shut the fuck up. If he wants to play AP Ez, let him. Not everyone plays super competitive. Some people play games to enjoy them, not to swing their fucking dick around. Jesus, you're all bunch of babies. "YOU'RE NOT HAVING FUN THE RIGHT WAY BLAHBLAH".