this has been talked a lot of time, the total tech cost is still the same (if im not wrong okw is something like 5 more fuel) , allied faction simply have the option of side teching or rushing , axis faction pay in packages and can skip techs instead (usf can too tho)
Total tech cost is less important rather than at which time you are forced to pay for those costs.
First stage: 1st tech, medic, upgrades
Second stage: light vehicle phase
Third stage: medium tanks
For ex:
Difference at start, SU starts with 20f and OKW with 10f and the starting mp pool is 620mp for OKW (300 + 320) and 560mp for SU (170 + 390). So it's a +10f/-60mp difference.
SU: T2 + Grenades + Medics = 510/30
OKW: 1 truck + T1 + Medics = 270/35
_____
SU:
T2 + G + M + T3 = 710/105
OKW:
1 truck + T1 + M + Unit upgrade = 370/55
1 truck + T2 + Engineers = 370/75
2 trucks + T2 + T1 + Medics = 540/95
______
SU:
T2 + G + M + T3 + T4 = 990/205
OKW:
2 trucks + T1 + M + Unit upgrade + T3 + Panzer Req = 640/190
2 trucks + T2 + E + T3 + PQ = 640/210
3 trucks + T1 + M + T2 + T3 + PQ = 810/230
I hope i made the math right. I'm not opposed to try a -5% RA at vet 4/5 and/or swap the healing bonus from vet5 to vet4. But i don't think you can just put infantry to fight 1v1 and call it imbalanced or not when the circumstances at which they arrive at that point are different.