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

#1
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
www.easa.europa.eu.xlsx (live.com)

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.