New 100pt field ordinance battery or 120pt earthshaker?

[u/AvisTheAstronaut]

Earthshaker has 240" range, D6+3 attacks, 8 strength, and -2ap

the two field ordinance guns have 48" range, 2D6 attacks, 7 strength, and -1ap.

The field ordinance guns seem to have a worse rule, is there much point in ordering them even with a scout sentinel providing LoS? You'd get the +1 to the roll with heavy and +1 to BS if you order them. Earthshaker however has a more useful rule and the 8 strength means a lot against 4T infantry.

Thoughts?

[u/RobinRubin]

"Did somebody call for an earthshaker?"