What kind of Speech is it?

[Guest]

Happy New Year! Everybody :D

I would llike to know what the function of the phrase compared with in the following sentence is:
The joy of the tour is mild compared with silent pray.

Hope to get your assistance,
Jupiter

[Alan]

[guest]

Thanks so much for your help, :D

You said it comes from when it is compared with so we omit when it is, right?
I think we can omit only it is in that sentence so the sentence could be the joy of the tour is mild when compared with silent pray.

waiting for your help
Jupiter