Help! Which statistical method/s is best to use in comparing the efficiency of two engines in terms of?

Hello. I just need some help in practicing to determine statistical analyses. What is the correct/best statistical analysis for this topic

"The Jet Engine efficiency comparison of Rolls-Royce AE3007A1 and General Electric CF34-10E2A1 in terms of nvPM emissions"

I'll do the computations via a statistical software SPSS. I just need to gather ideas which correct/best statistical analysis must be used for this topic.

I found the data online from EASA (

This is for the purpose of personal practices only and will not be used for any official research studies or publications.

Thanks for your help.