u start off with that unit, means u won't be spending 300 MP , the way i see it u'd be spending 45 muni to get an early terminator squad , therby delaying shreks a bit more , or spending 30 muni if u feel like starting with a kubel or skip tier 1 .
I'm actually not sure if I can refute that point since all factions used to start with the same amount of manpower with their starting unit subtracted but then they changed Wehrmacht's and I think they aren't all anymore.
And I'm hardly an excellent authority, but I'm still pretty sure SPs' early-game is fine. Relic already buffed their survivability at the cost of DPS to reduce when they really were a tad cheesy.