ok, this time it is easier:

If you cut-and-paste your both Pronto signals into the Generate & Analyze-Window of IrMaster, and press "Decode", you will see that both decode as

protocol = Pioneer, device = 87, obc = 229

I.e. it is the "same" signal! An IR signal is a sequence of times (in the CCF, all the number starting with number 5), i.e. measurements of physical variables, so small variations are therefore "within the error marginal". It is like the numbers 201 and 199, they are "close" (1%) but the numbers look quite different.