Latent energy has nothing to do with it however if you think diesel is a high compression fuel for spark ignition engines dump some in your gas engined car or lawn mower and let us know how it works out for you., like we already don't know, lol. Compression ignition is not to be interlinked with spark ignition for sake of discussion or argument. It's two different things period. The diesel, fuel added to gasoline both lowers the octane and lowers the volatility of the fuel. Both being advantageous in engines with low compression (and this lower octane needs) and hot manifolds., As I said, some low grade fuel engines will run decently on gas, some will not, that's not theory, it is known fact.
Corrected all the typos, sorry. Happens every time I post from my cell phone