Ok so just a lot of things wrong here and I'll go through them.
1. Don't factor in m3a1 as a "must have". Not every player does use it and it is built almost NEVER against ost.
2. Soviets start with 20F, T1 takes 10 and T2 takes 20. So I don't know why you have a varied fuel option that is the difference of only 5, when it should be 10.
3. Given you go T1 which is rather potent right now and don't go m3a1 because you're against OST you get this equation for a T34 rush: 10F+85F+90F+90F-20F = 255F. No clue how you got to 290/295 with just an m3a1 added which is 15.
4. OST fast tech using T1 to p4 you get this equation: 10F+40F+90F+15F+120F-20F = 255F. The exact same as soviets without going T2 for a pak gun or 251. So the notion that the P4 comes for "cheaper" is wrong.
5. OKW fast tech using T1 to P4 you get this equation: 15F+25F+15F+120F+140F-5F= 310F WITHOUT MEDICS.
Want to just factor in the buildings/tech?
Sov going T1: 10F+85F+90F-20 = 165F
Ost going T1: 10F+40F+90F+15F-20F = 145F
OKW going T1: 15F+25F+15F+120F-5F = 170F
The only real disadvantage you'll have in a theoredical stalemate as soviets is when the 1st tank hits the field, and when you max out at popcap given you have equal number of tanks. Every tank after the 1st one as soviets will arrive sooner than any counterparts 2nd armor piece.
So yeah, in conclusion teching is fine in the fuel department so long as we ignore the massive holes in faction design.
The calculation was total fuel cost not factoring initial fuel... 10 + 85 + 90 = 185 fuel for t4.... 200 fuel with the scout car 275 fuel for a t34 without a scout car and 290 fuel for a T34 with the scout car
1. The scout car is always useful for punishing both ost and okw in the first phase of the game
2. Wehr techs for cheaper to get a superior tank... understandable since they lack an LT... but its not like ost cant skip t2 to go straight for a p4 rush...
3. Okw spends 175 Fuel (without medics... around 190 with medics... which is cheaper than sov teching which takes 185 fuel without the m3 and 200 fuel with the m3
This is ridiculous as they spend less fuel teching up to get access to superior tanks in a building that acts as a free bunker