True MAPP has been extinct for 5 yrs and tho' it's replacements (MAPD, 'MAPP-Pro') aren't much hotter than propane
'in free air' adding oxygen better replicates the performance of the original. You don't want to weld steel with MAPP, MAPD, or MAPP-Pro as hydrogen absorption will make the welds brittle.
I worked at M__ Muffler 35 yrs ago. Propane with O2 cut clamps & shock mount bolts like butter and the acetylene cart was the dustiest and least used tool in the shop. (w/
coat-hanger, but not much to weld there, actually) Plumbers still prefer MAPP with lead free solder for the extra hundred+ degrees and higher BTU. Most importantly, head/tip types are critical to getting the most from the pricier gas, as is using it with O2.
If you want to cut or braze with the above kit I doubt you'd be disappointed. Having the best tip on there it'd be my 1st chioice. Wouldn't cost much to prove me right or wrong about it for the task & it sure sounds easier to use than the carbon-arc torch I usually braze with.

Give it a shot & tell us what YOU think. If it bombs we can always take up a collection to cover you investment.
