Warmachine tends to be about synergy. Normally, 1 or two models work well together and things happen.
By comparison, Menoth is like a zealous Rube-Goldberg machine of death.
The 40k analogy is a little rough as there is so little actual synergy in 40k when compared to WM. Most everything in WM needs something to use its special ability on another to make it function better. So I suppose you could think of "Which 40k army is the most buff heavy and has a wide range of troops from crappy infantry that are just there to catch bullets to big ol nigh unkillable heavy infantry (bastions) in the right hands?"
Menoth warjacks are terrible on their own. If you add on the choir and other things, suddenly, the warjacks can really shine.
Also, just post on the boards about splitting the box if you want to, many people are up for it. It's the ABoR of the WM world.