Well it really depends what and against whom you are comparing and how much this makes sense. 4 mainlines or similars make sense on all factions since this is a viable build. Additional AT gun also makes sense for basically all factions, additional MG not so much since OKW and USF were not designed to use MGs as an integral part and UKF and SOV don't necessarily need one either, especially not in the early game and even more especially not in the early game against Ostheer.
Also we may should not forget to compare the strengths of the composition afterwards (and the amount of unit options each faction gets). This is obviously quite tricky and situation dependent, but at least some points can be considered. E.g. Riflemen cost more than Grenadiere. Does USF therefor draw the short end of the stick? Nope, because Riflemen are very good infantry that usually beat Grenadiere unless you go for a long range shoot out. Similarly you can argue that OST get's it's 251 or 222 faster than SOV get their T70, but that's scewed as well. Now obviously there are more factors to that like for example OST's faction design in the early game revolving around using the MG42 and Grenadiere in conjunction, but we should not leave the power level out of sight.
I agree with that but don't forget the Topic's title. People wants strong grenadiers to go toe to toe with riflemen and Tommies, they don't care much about Cons in their logic.