Mismatch is always part of the expectation from product to product.
The part that caught my attention is the bolt hole plane centerline to port plane centerline, those ports are lower with the TF head when compared to production heads - either street oem production or max wedge. That isn't the hot set up for short side at the valve pocket. I haven't looked at any flow numbers on these other than the ones in this thread, but I suspect that may be why these things go dead at 500 - 550 lift in CFM numbers, I'm not trying to be critical, just an observation.....

I suppose to keep it a "bolt on replacement type" head and to get bigger CFM numbers the centerline had to drop some, but also keep in mind that bigger CFM numbers alone dont automatically mean more HP.