Blade combo jump cancel

Hey guys,

I played Blade a ton during the beta, but I'm having a problem with one of his combos.

I've noticed that almost every combo guide starts with:

5M > 5H > 2H > U > JH

and then they Jump Cancel into JM.

I've been trying to do that Jump Cancel for 3 days, but I just can't get it to come out.

What's weird is that I have no problem doing a Jump Cancel in this combo:

5M > 5H > 2H > JM > JH > Jump Cancel > JM > JH

So I'm wondering: am I doing something wrong with my inputs, or is the timing after just really strict?

Thanks a lot!