conscripts arent 240mp btw... theyre 240mp + the base cost of 125 + 80mp + 20 fuel (in live)...
for a 4 conscript build thats 291mp
for a 3 conscript build thats 308mp
...
That is a completely one sided approach.
It one want to calculate things in that manner then:
Grenadier are not 240 manpower...they are 240mp base cost + 80/10 T1+100/40BP1
For 4 grenadier that is 285mp
For 3 grenadiers that is 300mp.
One can not take into account tech cost for side and not take into account the tech cost for the other.
In addition conscript spam is viable while vanilla grenadier is less viable.