Didn't Jason get continously outclassed by random people in 52 or whichever weekly horror series it was he was in? How could he be able to so easily beat Tim, who was able to fight Shiva? Plus a huge part of Tim's bit (when he's not being written as AngstBoyWonder) is that he is very smart. Brute fighting, while he can do, is not his thing. He'd find a way to best Jason's brute force rather than charging in.
Yucky character writing, written to rush to an end we already know.