The fake MAPP has more percentage of BTUs in the middle. The real MAPP hasn't been made in some time. If you were looking at a shower head with inner and outer layers, the propane delivers something like 12% to the middle, MAPPro about 18%. Either way, most of BTUs are in the outer feather with propane or MAPP.
Definitely like the self ignition, but I'd get something with the longest warranty. My BernzOmatic metal handle self ignition used to light almost every time, but it takes 3-4 clicks to light it as of late.