Yeah the Raketen needs a faster set up time, got absolutely destroyed by multiple USF WC51 car rush in the beta in 1v1. In fact I think it was against Hon3ynuts, wasn't it Hon3ynuts? Multiple scout car opening for either faction is strong against OKW, especially WC51 into Stuart, that was such an ass wuppin.
depends alot on the player
as soviet i love T1 opening with scoutcar
against some players/ one some maps / etc it works wonders
against other okw players /other maps it is bad
its strenght is mobility its weakness is kubel + sturmpio at long range
why? sturmpio can repair while the kubel shoots and it has similar dps than M3 at far
M3 can't be healed by engineers due to suppression
but i shouldn't tell you what works