Can anyone chime in regarding my cylinder? Comparing it to OP's it's even more shaved i think. Anyone have a guess what kind of porting it is?

You are not showing us the ports that make much of a difference on the power.  We need to have port widths, port heights, port angles on the transfer and exhaust ports where the ports intersect the bore. 

About 80% of the power gains are made from the transfer and exhaust port window back into the port tunnel about !/2 inch.